16519476864 has 64 divisors (see below), whose sum is σ = 47868950880. Its totient is φ = 5005900800.

The previous prime is 16519476863. The next prime is 16519476923. The reversal of 16519476864 is 46867491561.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (16519476863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951207 + ... + 1959654.

Almost surely, 2^16519476864 is an apocalyptic number.

It is an amenable number.

16519476864 is an abundant number, since it is smaller than the sum of its proper divisors (31349474016).

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

16519476864 is a wasteful number, since it uses less digits than its factorization.

16519476864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910889 (or 3910877 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The spelling of 16519476864 in words is "sixteen billion, five hundred nineteen million, four hundred seventy-six thousand, eight hundred sixty-four".