1656505858116 has 24 divisors (see below), whose sum is σ = 3865227055200. Its totient is φ = 552161945152.

The previous prime is 1656505858081. The next prime is 1656505858123. The reversal of 1656505858116 is 6118585056561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256960 + ... + 1838216.

It is an arithmetic number, because the mean of its divisors is an integer number (161051127300).

Almost surely, 2^{1656505858116} is an apocalyptic number.

It is an amenable number.

1656505858116 is an abundant number, since it is smaller than the sum of its proper divisors (2208721197084).

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

1656505858116 is a wasteful number, since it uses less digits than its factorization.

1656505858116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668563 (or 1668561 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 57.

The spelling of 1656505858116 in words is "one trillion, six hundred fifty-six billion, five hundred five million, eight hundred fifty-eight thousand, one hundred sixteen".