1656926988816 has 160 divisors (see below), whose sum is σ = 4730420376576. Its totient is φ = 495593280000.

The previous prime is 1656926988791. The next prime is 1656926988881. The reversal of 1656926988816 is 6188896296561.

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, 12451111 + ... + 12583481.

Almost surely, 2^{1656926988816} is an apocalyptic number.

1656926988816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1656926988816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2365210188288).

1656926988816 is an abundant number, since it is smaller than the sum of its proper divisors (3073493387760).

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

1656926988816 is a wasteful number, since it uses less digits than its factorization.

1656926988816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132701 (or 132695 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 75.

The spelling of 1656926988816 in words is "one trillion, six hundred fifty-six billion, nine hundred twenty-six million, nine hundred eighty-eight thousand, eight hundred sixteen".