19507275872 has 96 divisors (see below), whose sum is σ = 46680012288. Its totient is φ = 7833470976.

The previous prime is 19507275817. The next prime is 19507275899. The reversal of 19507275872 is 27857270591.

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, 853133 + ... + 875699.

It is an arithmetic number, because the mean of its divisors is an integer number (486250128).

Almost surely, 2^19507275872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19507275872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23340006144).

19507275872 is an abundant number, since it is smaller than the sum of its proper divisors (27172736416).

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

19507275872 is a wasteful number, since it uses less digits than its factorization.

19507275872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22828 (or 22820 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 53.

The spelling of 19507275872 in words is "nineteen billion, five hundred seven million, two hundred seventy-five thousand, eight hundred seventy-two".