10156271220 has 72 divisors (see below), whose sum is σ = 30845060064. Its totient is φ = 2705024448.

The previous prime is 10156271173. The next prime is 10156271239. The reversal of 10156271220 is 2217265101.

10156271220 is a `hidden beast` number, since 1 + 0 + 1 + 5 + 627 + 12 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114747 + ... + 182973.

It is an arithmetic number, because the mean of its divisors is an integer number (428403612).

Almost surely, 2^10156271220 is an apocalyptic number.

10156271220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10156271220 is an abundant number, since it is smaller than the sum of its proper divisors (20688788844).

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

10156271220 is a wasteful number, since it uses less digits than its factorization.

10156271220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69069 (or 69064 counting only the distinct ones).

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

The spelling of 10156271220 in words is "ten billion, one hundred fifty-six million, two hundred seventy-one thousand, two hundred twenty".