16538138883 has 48 divisors (see below), whose sum is σ = 29579337216. Its totient is φ = 8687589120.

The previous prime is 16538138867. The next prime is 16538138893. The reversal of 16538138883 is 38883183561.

16538138883 is a `hidden beast` number, since 16 + 538 + 13 + 8 + 8 + 83 = 666.

It is not a de Polignac number, because 16538138883 - 2⁴ = 16538138867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16538138893) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133503 + ... + 225608.

It is an arithmetic number, because the mean of its divisors is an integer number (616236192).

Almost surely, 2^16538138883 is an apocalyptic number.

16538138883 is a deficient number, since it is larger than the sum of its proper divisors (13041198333).

16538138883 is a wasteful number, since it uses less digits than its factorization.

16538138883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359184 (or 359181 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 16538138883 in words is "sixteen billion, five hundred thirty-eight million, one hundred thirty-eight thousand, eight hundred eighty-three".