16640390376 has 48 divisors (see below), whose sum is σ = 45247325760. Its totient is φ = 5524692000.

The previous prime is 16640390329. The next prime is 16640390401. The reversal of 16640390376 is 67309304661.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442320 + ... + 478463.

It is an arithmetic number, because the mean of its divisors is an integer number (942652620).

Almost surely, 2^16640390376 is an apocalyptic number.

It is an amenable number.

16640390376 is an abundant number, since it is smaller than the sum of its proper divisors (28606935384).

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

16640390376 is a wasteful number, since it uses less digits than its factorization.

16640390376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921046 (or 921039 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 16640390376 in words is "sixteen billion, six hundred forty million, three hundred ninety thousand, three hundred seventy-six".