19872795807 has 12 divisors (see below), whose sum is σ = 28733332680. Its totient is φ = 13235522928.

The previous prime is 19872795797. The next prime is 19872795853. The reversal of 19872795807 is 70859727891.

It is not a de Polignac number, because 19872795807 - 2⁴ = 19872795791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19872795857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1074288 + ... + 1092629.

It is an arithmetic number, because the mean of its divisors is an integer number (2394444390).

Almost surely, 2^19872795807 is an apocalyptic number.

19872795807 is a deficient number, since it is larger than the sum of its proper divisors (8860536873).

19872795807 is a wasteful number, since it uses less digits than its factorization.

19872795807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167942 (or 2167939 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 63.

The spelling of 19872795807 in words is "nineteen billion, eight hundred seventy-two million, seven hundred ninety-five thousand, eight hundred seven".