19699090736 has 40 divisors (see below), whose sum is σ = 41173187664. Its totient is φ = 9076343040.

The previous prime is 19699090711. The next prime is 19699090753. The reversal of 19699090736 is 63709099691.

It is a super-2 number, since 2×19699090736² (a number of 21 digits) contains 22 as substring.

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, 41426 + ... + 202766.

Almost surely, 2^19699090736 is an apocalyptic number.

19699090736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19699090736 is an abundant number, since it is smaller than the sum of its proper divisors (21474096928).

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

19699090736 is a wasteful number, since it uses less digits than its factorization.

19699090736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161949 (or 161943 counting only the distinct ones).

The product of its (nonzero) digits is 4960116, while the sum is 59.

The spelling of 19699090736 in words is "nineteen billion, six hundred ninety-nine million, ninety thousand, seven hundred thirty-six".