7477675421 has 2 divisors, whose sum is σ = 7477675422. Its totient is φ = 7477675420.

The previous prime is 7477675363. The next prime is 7477675453. The reversal of 7477675421 is 1245767747.

7477675421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6462552100 + 1015123321 = 80390^2 + 31861^2 .

It is a cyclic number.

It is not a de Polignac number, because 7477675421 - 2¹⁰ = 7477674397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7477675421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7477675921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3738837710 + 3738837711.

It is an arithmetic number, because the mean of its divisors is an integer number (3738837711).

Almost surely, 2^7477675421 is an apocalyptic number.

It is an amenable number.

7477675421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7477675421 is an equidigital number, since it uses as much as digits as its factorization.

7477675421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304960, while the sum is 50.

The square root of 7477675421 is about 86473.5533038859. The cubic root of 7477675421 is about 1955.4897176513.

The spelling of 7477675421 in words is "seven billion, four hundred seventy-seven million, six hundred seventy-five thousand, four hundred twenty-one".