65728670064 has 20 divisors (see below), whose sum is σ = 169799064456. Its totient is φ = 21909556672.

The previous prime is 65728670039. The next prime is 65728670081. The reversal of 65728670064 is 46007682756.

It is a junction number, because it is equal to n+sod(n) for n = 65728669989 and 65728670016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684673599 + ... + 684673694.

Almost surely, 2^65728670064 is an apocalyptic number.

It is an amenable number.

65728670064 is an abundant number, since it is smaller than the sum of its proper divisors (104070394392).

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

65728670064 is a wasteful number, since it uses less digits than its factorization.

65728670064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369347304 (or 1369347298 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 65728670064 in words is "sixty-five billion, seven hundred twenty-eight million, six hundred seventy thousand, sixty-four".