16615376812 has 24 divisors (see below), whose sum is σ = 30112135200. Its totient is φ = 8012530176.

The previous prime is 16615376797. The next prime is 16615376837. The reversal of 16615376812 is 21867351661.

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, 30673 + ... + 184855.

It is an arithmetic number, because the mean of its divisors is an integer number (1254672300).

Almost surely, 2^16615376812 is an apocalyptic number.

It is an amenable number.

16615376812 is a deficient number, since it is larger than the sum of its proper divisors (13496758388).

16615376812 is a wasteful number, since it uses less digits than its factorization.

16615376812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155145 (or 155143 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The spelling of 16615376812 in words is "sixteen billion, six hundred fifteen million, three hundred seventy-six thousand, eight hundred twelve".