19471934515 has 16 divisors (see below), whose sum is σ = 25493700960. Its totient is φ = 14159646720.

The previous prime is 19471934473. The next prime is 19471934549. The reversal of 19471934515 is 51543917491.

It is not a de Polignac number, because 19471934515 - 2⁹ = 19471934003 is a prime.

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, 566131 + ... + 599539.

It is an arithmetic number, because the mean of its divisors is an integer number (1593356310).

Almost surely, 2^19471934515 is an apocalyptic number.

19471934515 is a deficient number, since it is larger than the sum of its proper divisors (6021766445).

19471934515 is a wasteful number, since it uses less digits than its factorization.

19471934515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44022.

The product of its digits is 680400, while the sum is 49.

The spelling of 19471934515 in words is "nineteen billion, four hundred seventy-one million, nine hundred thirty-four thousand, five hundred fifteen".