1656997959060 has 96 divisors (see below), whose sum is σ = 5458346248320. Its totient is φ = 415873995264.

The previous prime is 1656997959059. The next prime is 1656997959091. The reversal of 1656997959060 is 609597996561.

1656997959060 is a `hidden beast` number, since 1 + 6 + 569 + 9 + 7 + 9 + 59 + 0 + 6 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1656997959060.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90241254 + ... + 90259613.

It is an arithmetic number, because the mean of its divisors is an integer number (56857773420).

Almost surely, 2^{1656997959060} is an apocalyptic number.

1656997959060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1656997959060 is an abundant number, since it is smaller than the sum of its proper divisors (3801348289260).

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

1656997959060 is a wasteful number, since it uses less digits than its factorization.

1656997959060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180500902 (or 180500894 counting only the distinct ones).

The product of its (nonzero) digits is 248005800, while the sum is 72.

The spelling of 1656997959060 in words is "one trillion, six hundred fifty-six billion, nine hundred ninety-seven million, nine hundred fifty-nine thousand, sixty".