7657122413 has 4 divisors (see below), whose sum is σ = 7657873500. Its totient is φ = 7656371328.

The previous prime is 7657122401. The next prime is 7657122427. The reversal of 7657122413 is 3142217567.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411197284 + 7245925129 = 20278^2 + 85123^2 .

It is a cyclic number.

It is not a de Polignac number, because 7657122413 - 2⁴ = 7657122397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7657122433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360038 + ... + 380711.

It is an arithmetic number, because the mean of its divisors is an integer number (1914468375).

Almost surely, 2^7657122413 is an apocalyptic number.

It is an amenable number.

7657122413 is a deficient number, since it is larger than the sum of its proper divisors (751087).

7657122413 is a wasteful number, since it uses less digits than its factorization.

7657122413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751086.

The product of its digits is 70560, while the sum is 38.

The square root of 7657122413 is about 87504.9850751373. The cubic root of 7657122413 is about 1971.0086491363.

The spelling of 7657122413 in words is "seven billion, six hundred fifty-seven million, one hundred twenty-two thousand, four hundred thirteen".