19704513216 has 28 divisors (see below), whose sum is σ = 52134858392. Its totient is φ = 6568171008.

The previous prime is 19704513209. The next prime is 19704513233. The reversal of 19704513216 is 61231540791.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51313645 + ... + 51314028.

Almost surely, 2^19704513216 is an apocalyptic number.

19704513216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19704513216 is an abundant number, since it is smaller than the sum of its proper divisors (32430345176).

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

19704513216 is a wasteful number, since it uses less digits than its factorization.

19704513216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102627688 (or 102627678 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 19704513216 in words is "nineteen billion, seven hundred four million, five hundred thirteen thousand, two hundred sixteen".