16746686538 has 16 divisors (see below), whose sum is σ = 34949606976. Its totient is φ = 5339523200.

The previous prime is 16746686497. The next prime is 16746686543. The reversal of 16746686538 is 83568664761.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60676263 + ... + 60676538.

It is an arithmetic number, because the mean of its divisors is an integer number (2184350436).

Almost surely, 2^16746686538 is an apocalyptic number.

16746686538 is an abundant number, since it is smaller than the sum of its proper divisors (18202920438).

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

16746686538 is a wasteful number, since it uses less digits than its factorization.

16746686538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121352829.

The product of its digits is 34836480, while the sum is 60.

The spelling of 16746686538 in words is "sixteen billion, seven hundred forty-six million, six hundred eighty-six thousand, five hundred thirty-eight".