7821265108 has 12 divisors (see below), whose sum is σ = 14407593760. Its totient is φ = 3704809752.

The previous prime is 7821265099. The next prime is 7821265129. The reversal of 7821265108 is 8015621287.

It is a super-2 number, since 2×7821265108² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51455616 + ... + 51455767.

Almost surely, 2^7821265108 is an apocalyptic number.

It is an amenable number.

7821265108 is a deficient number, since it is larger than the sum of its proper divisors (6586328652).

7821265108 is a wasteful number, since it uses less digits than its factorization.

7821265108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102911406 (or 102911404 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 7821265108 is about 88437.9166873576. The cubic root of 7821265108 is about 1984.9931038386.

The spelling of 7821265108 in words is "seven billion, eight hundred twenty-one million, two hundred sixty-five thousand, one hundred eight".