7821301412 has 6 divisors (see below), whose sum is σ = 13687277478. Its totient is φ = 3910650704.

The previous prime is 7821301403. The next prime is 7821301427. The reversal of 7821301412 is 2141031287.

It can be written as a sum of positive squares in only one way, i.e., 5441422756 + 2379878656 = 73766^2 + 48784^2 .

It is a super-2 number, since 2×7821301412² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 977662673 + ... + 977662680.

It is an arithmetic number, because the mean of its divisors is an integer number (2281212913).

Almost surely, 2^7821301412 is an apocalyptic number.

It is an amenable number.

7821301412 is a deficient number, since it is larger than the sum of its proper divisors (5865976066).

7821301412 is a wasteful number, since it uses less digits than its factorization.

7821301412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955325357 (or 1955325355 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 7821301412 is about 88438.1219384491. The cubic root of 7821301412 is about 1984.9961750842.

Adding to 7821301412 its reverse (2141031287), we get a palindrome (9962332699).

The spelling of 7821301412 in words is "seven billion, eight hundred twenty-one million, three hundred one thousand, four hundred twelve".