1656368999964 has 72 divisors (see below), whose sum is σ = 4785244464000. Its totient is φ = 473230635552.

The previous prime is 1656368999963. The next prime is 1656369000001. The reversal of 1656368999964 is 4699998636561.

1656368999964 is a `hidden beast` number, since 165 + 6 + 368 + 9 + 9 + 9 + 96 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656368999963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7614787 + ... + 7829285.

Almost surely, 2^{1656368999964} is an apocalyptic number.

1656368999964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1656368999964 is an abundant number, since it is smaller than the sum of its proper divisors (3128875464036).

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

1656368999964 is a wasteful number, since it uses less digits than its factorization.

1656368999964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245159 (or 245154 counting only the distinct ones).

The product of its digits is 4081466880, while the sum is 81.

The spelling of 1656368999964 in words is "one trillion, six hundred fifty-six billion, three hundred sixty-eight million, nine hundred ninety-nine thousand, nine hundred sixty-four".