10156556420 has 48 divisors (see below), whose sum is σ = 21754837440. Its totient is φ = 3981634176.

The previous prime is 10156556411. The next prime is 10156556447. The reversal of 10156556420 is 2465565101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075439 + ... + 1084841.

It is an arithmetic number, because the mean of its divisors is an integer number (453225780).

Almost surely, 2^10156556420 is an apocalyptic number.

10156556420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10156556420 is an abundant number, since it is smaller than the sum of its proper divisors (11598281020).

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

10156556420 is a wasteful number, since it uses less digits than its factorization.

10156556420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10484 (or 10482 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 10156556420 in words is "ten billion, one hundred fifty-six million, five hundred fifty-six thousand, four hundred twenty".