17956772980 has 24 divisors (see below), whose sum is σ = 39348755712. Its totient is φ = 6870417312.

The previous prime is 17956772923. The next prime is 17956773011. The reversal of 17956772980 is 8927765971.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19517772 + ... + 19518691.

It is an arithmetic number, because the mean of its divisors is an integer number (1639531488).

Almost surely, 2^17956772980 is an apocalyptic number.

17956772980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17956772980 is an abundant number, since it is smaller than the sum of its proper divisors (21391982732).

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

17956772980 is a wasteful number, since it uses less digits than its factorization.

17956772980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39036495 (or 39036493 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 61.

The spelling of 17956772980 in words is "seventeen billion, nine hundred fifty-six million, seven hundred seventy-two thousand, nine hundred eighty".