65701732978 has 16 divisors (see below), whose sum is σ = 117528566400. Its totient is φ = 26933629536.

The previous prime is 65701732973. The next prime is 65701732979. The reversal of 65701732978 is 87923710756.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65701732973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102021003 + ... + 102021646.

It is an arithmetic number, because the mean of its divisors is an integer number (7345535400).

Almost surely, 2^65701732978 is an apocalyptic number.

65701732978 is a deficient number, since it is larger than the sum of its proper divisors (51826833422).

65701732978 is a wasteful number, since it uses less digits than its factorization.

65701732978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204042681.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 65701732978 in words is "sixty-five billion, seven hundred one million, seven hundred thirty-two thousand, nine hundred seventy-eight".