659767788864 has 140 divisors (see below), whose sum is σ = 1988907782400. Its totient is φ = 216194994432.

The previous prime is 659767788859. The next prime is 659767788959. The reversal of 659767788864 is 468887767956.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 772704 + ... + 1384415.

It is an arithmetic number, because the mean of its divisors is an integer number (14206484160).

Almost surely, 2^659767788864 is an apocalyptic number.

659767788864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

659767788864 is an abundant number, since it is smaller than the sum of its proper divisors (1329139993536).

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

659767788864 is a wasteful number, since it uses less digits than its factorization.

659767788864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157202 (or 2157183 counting only the distinct ones).

The product of its digits is 6827950080, while the sum is 81.

The spelling of 659767788864 in words is "six hundred fifty-nine billion, seven hundred sixty-seven million, seven hundred eighty-eight thousand, eight hundred sixty-four".