65701377672544 has 48 divisors (see below), whose sum is σ = 131672325632400. Its totient is φ = 32261890719744.

The previous prime is 65701377672509. The next prime is 65701377672577. The reversal of 65701377672544 is 44527677310756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15339537 + ... + 19149520.

It is an arithmetic number, because the mean of its divisors is an integer number (2743173450675).

Almost surely, 2^{65701377672544} is an apocalyptic number.

It is an amenable number.

65701377672544 is an abundant number, since it is smaller than the sum of its proper divisors (65970947959856).

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

65701377672544 is a wasteful number, since it uses less digits than its factorization.

65701377672544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34490135 (or 34490127 counting only the distinct ones).

The product of its (nonzero) digits is 207446400, while the sum is 64.

The spelling of 65701377672544 in words is "sixty-five trillion, seven hundred one billion, three hundred seventy-seven million, six hundred seventy-two thousand, five hundred forty-four".