19996915095 has 40 divisors (see below), whose sum is σ = 36007230336. Its totient is φ = 10617148224.

The previous prime is 19996915079. The next prime is 19996915153. The reversal of 19996915095 is 59051969991.

It is not a de Polignac number, because 19996915095 - 2⁴ = 19996915079 is a prime.

It is a super-2 number, since 2×19996915095² (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 39 ways as a sum of consecutive naturals, for example, 20392 + ... + 201021.

Almost surely, 2^19996915095 is an apocalyptic number.

19996915095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19996915095 is a deficient number, since it is larger than the sum of its proper divisors (16010315241).

19996915095 is a wasteful number, since it uses less digits than its factorization.

19996915095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221653 (or 221644 counting only the distinct ones).

The product of its (nonzero) digits is 8857350, while the sum is 63.

The spelling of 19996915095 in words is "nineteen billion, nine hundred ninety-six million, nine hundred fifteen thousand, ninety-five".