65780975932 has 96 divisors (see below), whose sum is σ = 140507136000. Its totient is φ = 26320966848.

The previous prime is 65780975893. The next prime is 65780975947. The reversal of 65780975932 is 23957908756.

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 31 ways as a sum of consecutive naturals, for example, 11324973 + ... + 11330779.

It is an arithmetic number, because the mean of its divisors is an integer number (1463616000).

Almost surely, 2^65780975932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65780975932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70253568000).

65780975932 is an abundant number, since it is smaller than the sum of its proper divisors (74726160068).

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

65780975932 is a wasteful number, since it uses less digits than its factorization.

65780975932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143 (or 6141 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 65780975932 in words is "sixty-five billion, seven hundred eighty million, nine hundred seventy-five thousand, nine hundred thirty-two".