16615606616 has 16 divisors (see below), whose sum is σ = 35604871440. Its totient is φ = 7120974240.

The previous prime is 16615606603. The next prime is 16615606621. The reversal of 16615606616 is 61660651661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148353575 + ... + 148353686.

It is an arithmetic number, because the mean of its divisors is an integer number (2225304465).

Almost surely, 2^16615606616 is an apocalyptic number.

It is an amenable number.

16615606616 is an abundant number, since it is smaller than the sum of its proper divisors (18989264824).

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

16615606616 is a wasteful number, since it uses less digits than its factorization.

16615606616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296707274 (or 296707270 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 16615606616 in words is "sixteen billion, six hundred fifteen million, six hundred six thousand, six hundred sixteen".