16536642616 has 32 divisors (see below), whose sum is σ = 33396778800. Its totient is φ = 7631043840.

The previous prime is 16536642607. The next prime is 16536642643. The reversal of 16536642616 is 61624663561.

It is a happy number.

It is a congruent number.

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, 999451 + ... + 1015861.

Almost surely, 2^16536642616 is an apocalyptic number.

It is an amenable number.

16536642616 is an abundant number, since it is smaller than the sum of its proper divisors (16860136184).

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

16536642616 is a wasteful number, since it uses less digits than its factorization.

16536642616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26119 (or 26115 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 16536642616 in words is "sixteen billion, five hundred thirty-six million, six hundred forty-two thousand, six hundred sixteen".