16687138472 has 32 divisors (see below), whose sum is σ = 32421600000. Its totient is φ = 8042344128.

The previous prime is 16687138471. The next prime is 16687138483. The reversal of 16687138472 is 27483178661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16687138471) 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, 78929 + ... + 199007.

It is an arithmetic number, because the mean of its divisors is an integer number (1013175000).

Almost surely, 2^16687138472 is an apocalyptic number.

It is an amenable number.

16687138472 is a deficient number, since it is larger than the sum of its proper divisors (15734461528).

16687138472 is a wasteful number, since it uses less digits than its factorization.

16687138472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120713 (or 120709 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The spelling of 16687138472 in words is "sixteen billion, six hundred eighty-seven million, one hundred thirty-eight thousand, four hundred seventy-two".