16400518893 has 12 divisors (see below), whose sum is σ = 25843242048. Its totient is φ = 9939708360.

The previous prime is 16400518867. The next prime is 16400518903. The reversal of 16400518893 is 39881500461.

16400518893 is a `hidden beast` number, since 1 + 6 + 40 + 0 + 518 + 8 + 93 = 666.

It is not a de Polignac number, because 16400518893 - 2⁵ = 16400518861 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16400518843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82830805 + ... + 82831002.

It is an arithmetic number, because the mean of its divisors is an integer number (2153603504).

Almost surely, 2^16400518893 is an apocalyptic number.

It is an amenable number.

16400518893 is a deficient number, since it is larger than the sum of its proper divisors (9442723155).

16400518893 is a wasteful number, since it uses less digits than its factorization.

16400518893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165661824 (or 165661821 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 16400518893 in words is "sixteen billion, four hundred million, five hundred eighteen thousand, eight hundred ninety-three".