10715220978 has 64 divisors (see below), whose sum is σ = 26737689600. Its totient is φ = 2781172800.

The previous prime is 10715220947. The next prime is 10715221037. The reversal of 10715220978 is 87902251701.

It is a super-2 number, since 2×10715220978² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 699748 + ... + 714896.

It is an arithmetic number, because the mean of its divisors is an integer number (417776400).

Almost surely, 2^10715220978 is an apocalyptic number.

10715220978 is an abundant number, since it is smaller than the sum of its proper divisors (16022468622).

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

10715220978 is a wasteful number, since it uses less digits than its factorization.

10715220978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16703.

The product of its (nonzero) digits is 70560, while the sum is 42.

The spelling of 10715220978 in words is "ten billion, seven hundred fifteen million, two hundred twenty thousand, nine hundred seventy-eight".