65711869920 has 96 divisors (see below), whose sum is σ = 229991559840. Its totient is φ = 17523164160.

The previous prime is 65711869849. The next prime is 65711869957. The reversal of 65711869920 is 2996811756.

65711869920 is a `hidden beast` number, since 6 + 571 + 1 + 8 + 69 + 9 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7601221 + ... + 7609860.

It is an arithmetic number, because the mean of its divisors is an integer number (2395745415).

Almost surely, 2^65711869920 is an apocalyptic number.

65711869920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65711869920 is an abundant number, since it is smaller than the sum of its proper divisors (164279689920).

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

65711869920 is a wasteful number, since it uses less digits than its factorization.

65711869920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15211105 (or 15211091 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 65711869920 in words is "sixty-five billion, seven hundred eleven million, eight hundred sixty-nine thousand, nine hundred twenty".