19694660960 has 96 divisors (see below), whose sum is σ = 51835775040. Its totient is φ = 7021099008.

The previous prime is 19694660929. The next prime is 19694660977. The reversal of 19694660960 is 6906649691.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19694660896 and 19694660905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102932 + ... + 223571.

It is an arithmetic number, because the mean of its divisors is an integer number (539955990).

Almost surely, 2^19694660960 is an apocalyptic number.

19694660960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19694660960 is an abundant number, since it is smaller than the sum of its proper divisors (32141114080).

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

19694660960 is a wasteful number, since it uses less digits than its factorization.

19694660960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326560 (or 326552 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 19694660960 in words is "nineteen billion, six hundred ninety-four million, six hundred sixty thousand, nine hundred sixty".