65988088956 has 18 divisors (see below), whose sum is σ = 166803224952. Its totient is φ = 21996029640.

The previous prime is 65988088951. The next prime is 65988088973.

65988088956 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65988088951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 916501200 + ... + 916501271.

Almost surely, 2^65988088956 is an apocalyptic number.

It is an amenable number.

65988088956 is an abundant number, since it is smaller than the sum of its proper divisors (100815135996).

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

65988088956 is a wasteful number, since it uses less digits than its factorization.

65988088956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833002481 (or 1833002476 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 72.

The spelling of 65988088956 in words is "sixty-five billion, nine hundred eighty-eight million, eighty-eight thousand, nine hundred fifty-six".