19309509696 has 56 divisors (see below), whose sum is σ = 53778688480. Its totient is φ = 6097738752.

The previous prime is 19309509683. The next prime is 19309509731. The reversal of 19309509696 is 69690590391.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 2642941 + ... + 2650236.

Almost surely, 2^19309509696 is an apocalyptic number.

19309509696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19309509696 is an abundant number, since it is smaller than the sum of its proper divisors (34469178784).

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

19309509696 is a wasteful number, since it uses less digits than its factorization.

19309509696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293211 (or 5293201 counting only the distinct ones).

The product of its (nonzero) digits is 3542940, while the sum is 57.

The spelling of 19309509696 in words is "nineteen billion, three hundred nine million, five hundred nine thousand, six hundred ninety-six".