16615055516 has 6 divisors (see below), whose sum is σ = 29076347160. Its totient is φ = 8307527756.

The previous prime is 16615055507. The next prime is 16615055539. The reversal of 16615055516 is 61555051661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2076881936 + ... + 2076881943.

It is an arithmetic number, because the mean of its divisors is an integer number (4846057860).

Almost surely, 2^16615055516 is an apocalyptic number.

It is an amenable number.

16615055516 is a deficient number, since it is larger than the sum of its proper divisors (12461291644).

16615055516 is a wasteful number, since it uses less digits than its factorization.

16615055516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153763883 (or 4153763881 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 16615055516 in words is "sixteen billion, six hundred fifteen million, fifty-five thousand, five hundred sixteen".