16206138504 has 48 divisors (see below), whose sum is σ = 45517246320. Its totient is φ = 5402045520.

The previous prime is 16206138497. The next prime is 16206138577. The reversal of 16206138504 is 40583160261.

It is a happy number.

16206138504 is a `hidden beast` number, since 1 + 62 + 0 + 61 + 38 + 504 = 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 11 ways as a sum of consecutive naturals, for example, 4166302 + ... + 4170189.

It is an arithmetic number, because the mean of its divisors is an integer number (948275965).

Almost surely, 2^16206138504 is an apocalyptic number.

It is an amenable number.

16206138504 is an abundant number, since it is smaller than the sum of its proper divisors (29311107816).

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

16206138504 is an equidigital number, since it uses as much as digits as its factorization.

16206138504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336512 (or 8336496 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 16206138504 its reverse (40583160261), we get a palindrome (56789298765).

The spelling of 16206138504 in words is "sixteen billion, two hundred six million, one hundred thirty-eight thousand, five hundred four".