19620990696 has 64 divisors (see below), whose sum is σ = 51320793600. Its totient is φ = 6239395008.

The previous prime is 19620990643. The next prime is 19620990703. The reversal of 19620990696 is 69609902691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162315 + ... + 256101.

It is an arithmetic number, because the mean of its divisors is an integer number (801887400).

Almost surely, 2^19620990696 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 19620990696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25660396800).

19620990696 is an abundant number, since it is smaller than the sum of its proper divisors (31699802904).

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

19620990696 is a wasteful number, since it uses less digits than its factorization.

19620990696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94198 (or 94194 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 57.

The spelling of 19620990696 in words is "nineteen billion, six hundred twenty million, nine hundred ninety thousand, six hundred ninety-six".