65257118979 has 16 divisors (see below), whose sum is σ = 94173408000. Its totient is φ = 39956422176.

The previous prime is 65257118957. The next prime is 65257118981. The reversal of 65257118979 is 97981175256.

It is not a de Polignac number, because 65257118979 - 2¹⁵ = 65257086211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65257118939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4196409 + ... + 4211930.

It is an arithmetic number, because the mean of its divisors is an integer number (5885838000).

Almost surely, 2^65257118979 is an apocalyptic number.

65257118979 is a deficient number, since it is larger than the sum of its proper divisors (28916289021).

65257118979 is a wasteful number, since it uses less digits than its factorization.

65257118979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8408554.

The product of its digits is 9525600, while the sum is 60.

The spelling of 65257118979 in words is "sixty-five billion, two hundred fifty-seven million, one hundred eighteen thousand, nine hundred seventy-nine".