16519423272 has 32 divisors (see below), whose sum is σ = 45052973280. Its totient is φ = 5005885760.

The previous prime is 16519423267. The next prime is 16519423303. The reversal of 16519423272 is 27232491561.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31286523 + ... + 31287050.

It is an arithmetic number, because the mean of its divisors is an integer number (1407905415).

Almost surely, 2^16519423272 is an apocalyptic number.

16519423272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16519423272 is an abundant number, since it is smaller than the sum of its proper divisors (28533550008).

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

16519423272 is a wasteful number, since it uses less digits than its factorization.

16519423272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62573593 (or 62573589 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The spelling of 16519423272 in words is "sixteen billion, five hundred nineteen million, four hundred twenty-three thousand, two hundred seventy-two".