65213054772 has 12 divisors (see below), whose sum is σ = 152163794496. Its totient is φ = 21737684920.

The previous prime is 65213054747. The next prime is 65213054773. The reversal of 65213054772 is 27745031256.

65213054772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65213054773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2717210604 + ... + 2717210627.

It is an arithmetic number, because the mean of its divisors is an integer number (12680316208).

Almost surely, 2^65213054772 is an apocalyptic number.

It is an amenable number.

65213054772 is an abundant number, since it is smaller than the sum of its proper divisors (86950739724).

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

65213054772 is a wasteful number, since it uses less digits than its factorization.

65213054772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434421238 (or 5434421236 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 65213054772 in words is "sixty-five billion, two hundred thirteen million, fifty-four thousand, seven hundred seventy-two".