65813906552 has 16 divisors (see below), whose sum is σ = 123412387200. Its totient is φ = 32903936640.

The previous prime is 65813906507. The next prime is 65813906563. The reversal of 65813906552 is 25560931856.

It is a self number, because there is not a number n which added to its sum of digits gives 65813906552.

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, 282977 + ... + 460112.

It is an arithmetic number, because the mean of its divisors is an integer number (7713274200).

Almost surely, 2^65813906552 is an apocalyptic number.

It is an amenable number.

65813906552 is a deficient number, since it is larger than the sum of its proper divisors (57598480648).

65813906552 is a wasteful number, since it uses less digits than its factorization.

65813906552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754166 (or 754162 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 65813906552 in words is "sixty-five billion, eight hundred thirteen million, nine hundred six thousand, five hundred fifty-two".