10716521220 has 36 divisors (see below), whose sum is σ = 32506781580. Its totient is φ = 2857738944.

The previous prime is 10716521197. The next prime is 10716521273. The reversal of 10716521220 is 2212561701.

10716521220 is a `hidden beast` number, since 1 + 0 + 7 + 1 + 652 + 1 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2059707456 + 8656813764 = 45384^2 + 93042^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×10716521220² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29767935 + ... + 29768294.

It is an arithmetic number, because the mean of its divisors is an integer number (902966155).

Almost surely, 2^10716521220 is an apocalyptic number.

10716521220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10716521220 is an abundant number, since it is smaller than the sum of its proper divisors (21790260360).

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

10716521220 is a wasteful number, since it uses less digits than its factorization.

10716521220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59536244 (or 59536239 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 10716521220 in words is "ten billion, seven hundred sixteen million, five hundred twenty-one thousand, two hundred twenty".