8957721011736 has 64 divisors (see below), whose sum is σ = 25632208270080. Its totient is φ = 2555476894080.

The previous prime is 8957721011719. The next prime is 8957721011791. The reversal of 8957721011736 is 6371101277598.

It is a congruent number.

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, 40221606 + ... + 40443701.

It is an arithmetic number, because the mean of its divisors is an integer number (400503254220).

Almost surely, 2^{8957721011736} is an apocalyptic number.

It is an amenable number.

8957721011736 is an abundant number, since it is smaller than the sum of its proper divisors (16674487258344).

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

8957721011736 is a wasteful number, since it uses less digits than its factorization.

8957721011736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80665984 (or 80665980 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 57.

The spelling of 8957721011736 in words is "eight trillion, nine hundred fifty-seven billion, seven hundred twenty-one million, eleven thousand, seven hundred thirty-six".