19619763968 has 72 divisors (see below), whose sum is σ = 46703666688. Its totient is φ = 8042867712.

The previous prime is 19619763953. The next prime is 19619764019. The reversal of 19619763968 is 86936791691.

It is a super-2 number, since 2×19619763968² (a number of 21 digits) contains 22 as substring.

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, 196796 + ... + 279227.

Almost surely, 2^19619763968 is an apocalyptic number.

It is an amenable number.

19619763968 is an abundant number, since it is smaller than the sum of its proper divisors (27083902720).

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

19619763968 is an equidigital number, since it uses as much as digits as its factorization.

19619763968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476069 (or 476055 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 65.

The spelling of 19619763968 in words is "nineteen billion, six hundred nineteen million, seven hundred sixty-three thousand, nine hundred sixty-eight".