16647788040 has 64 divisors (see below), whose sum is σ = 53785166400. Its totient is φ = 4097916672.

The previous prime is 16647788039. The next prime is 16647788093. The reversal of 16647788040 is 4088774661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5334270 + ... + 5337389.

It is an arithmetic number, because the mean of its divisors is an integer number (840393225).

Almost surely, 2^16647788040 is an apocalyptic number.

16647788040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16647788040 is an abundant number, since it is smaller than the sum of its proper divisors (37137378360).

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

16647788040 is a wasteful number, since it uses less digits than its factorization.

16647788040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671686 (or 10671682 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 16647788040 in words is "sixteen billion, six hundred forty-seven million, seven hundred eighty-eight thousand, forty".