53977965957 has 12 divisors (see below), whose sum is σ = 78317809024. Its totient is φ = 35823940200.

The previous prime is 53977965859. The next prime is 53977965983. The reversal of 53977965957 is 75956977935.

It is not a de Polignac number, because 53977965957 - 2⁷ = 53977965829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53977965557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13445419 + ... + 13449432.

Almost surely, 2^53977965957 is an apocalyptic number.

It is an amenable number.

53977965957 is a deficient number, since it is larger than the sum of its proper divisors (24339843067).

53977965957 is a wasteful number, since it uses less digits than its factorization.

53977965957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26895080 (or 26895077 counting only the distinct ones).

The product of its digits is 562605750, while the sum is 72.

The spelling of 53977965957 in words is "fifty-three billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, nine hundred fifty-seven".