15601665006616 has 32 divisors (see below), whose sum is σ = 32589684867600. Its totient is φ = 6952466102400.

The previous prime is 15601665006589. The next prime is 15601665006617. The reversal of 15601665006616 is 61660056610651.

It is a self number, because there is not a number n which added to its sum of digits gives 15601665006616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15601665006617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2586479910 + ... + 2586485941.

Almost surely, 2^{15601665006616} is an apocalyptic number.

It is an amenable number.

15601665006616 is an abundant number, since it is smaller than the sum of its proper divisors (16988019860984).

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

15601665006616 is a wasteful number, since it uses less digits than its factorization.

15601665006616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172965899 (or 5172965895 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 15601665006616 in words is "fifteen trillion, six hundred one billion, six hundred sixty-five million, six thousand, six hundred sixteen".