19956692992 has 96 divisors (see below), whose sum is σ = 41777648640. Its totient is φ = 9512673280.

The previous prime is 19956692957. The next prime is 19956693017. The reversal of 19956692992 is 29929665991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20301333 + ... + 20302315.

It is an arithmetic number, because the mean of its divisors is an integer number (435183840).

Almost surely, 2^19956692992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19956692992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20888824320).

19956692992 is an abundant number, since it is smaller than the sum of its proper divisors (21820955648).

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

19956692992 is an equidigital number, since it uses as much as digits as its factorization.

19956692992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459 (or 1439 counting only the distinct ones).

The product of its digits is 42515280, while the sum is 67.

The spelling of 19956692992 in words is "nineteen billion, nine hundred fifty-six million, six hundred ninety-two thousand, nine hundred ninety-two".