10021079856 has 20 divisors (see below), whose sum is σ = 25887789752. Its totient is φ = 3340359936.

The previous prime is 10021079851. The next prime is 10021079897. The reversal of 10021079856 is 65897012001.

It is not an unprimeable number, because it can be changed into a prime (10021079851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104386201 + ... + 104386296.

Almost surely, 2^10021079856 is an apocalyptic number.

10021079856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

10021079856 is an abundant number, since it is smaller than the sum of its proper divisors (15866709896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10021079856 is a wasteful number, since it uses less digits than its factorization.

10021079856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208772508 (or 208772502 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 10021079856 in words is "ten billion, twenty-one million, seventy-nine thousand, eight hundred fifty-six".