15919794436 has 72 divisors (see below), whose sum is σ = 36027108096. Its totient is φ = 6094751040.

The previous prime is 15919794413. The next prime is 15919794479. The reversal of 15919794436 is 63449791951.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21786 + ... + 179761.

Almost surely, 2^15919794436 is an apocalyptic number.

It is an amenable number.

15919794436 is an abundant number, since it is smaller than the sum of its proper divisors (20107313660).

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

15919794436 is a wasteful number, since it uses less digits than its factorization.

15919794436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201609 (or 201600 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 58.

The spelling of 15919794436 in words is "fifteen billion, nine hundred nineteen million, seven hundred ninety-four thousand, four hundred thirty-six".