65728703292 has 72 divisors (see below), whose sum is σ = 178441194960. Its totient is φ = 18775975680.

The previous prime is 65728703137. The next prime is 65728703437. The reversal of 65728703292 is 29230782756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4890742 + ... + 4904162.

It is an arithmetic number, because the mean of its divisors is an integer number (2478349930).

Almost surely, 2^65728703292 is an apocalyptic number.

It is an amenable number.

65728703292 is an abundant number, since it is smaller than the sum of its proper divisors (112712491668).

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

65728703292 is a wasteful number, since it uses less digits than its factorization.

65728703292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21771 (or 21762 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 65728703292 in words is "sixty-five billion, seven hundred twenty-eight million, seven hundred three thousand, two hundred ninety-two".