16400803716 has 72 divisors (see below), whose sum is σ = 45993074400. Its totient is φ = 4885697280.

The previous prime is 16400803691. The next prime is 16400803733. The reversal of 16400803716 is 61730800461.

16400803716 is a `hidden beast` number, since 1 + 640 + 0 + 8 + 0 + 3 + 7 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327621 + ... + 374348.

It is an arithmetic number, because the mean of its divisors is an integer number (638792700).

Almost surely, 2^16400803716 is an apocalyptic number.

It is an amenable number.

16400803716 is an abundant number, since it is smaller than the sum of its proper divisors (29592270684).

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

16400803716 is a wasteful number, since it uses less digits than its factorization.

16400803716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702049 (or 702044 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 16400803716 in words is "sixteen billion, four hundred million, eight hundred three thousand, seven hundred sixteen".