1016615665516 has 144 divisors (see below), whose sum is σ = 2074097555712. Its totient is φ = 432060652800.

The previous prime is 1016615665399. The next prime is 1016615665529. The reversal of 1016615665516 is 6155665166101.

It is a super-2 number, since 2×1016615665516² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1016615665516.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 310794961 + ... + 310798231.

It is an arithmetic number, because the mean of its divisors is an integer number (14403455248).

Almost surely, 2^{1016615665516} is an apocalyptic number.

It is an amenable number.

1016615665516 is an abundant number, since it is smaller than the sum of its proper divisors (1057481890196).

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

1016615665516 is a wasteful number, since it uses less digits than its factorization.

1016615665516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3577 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 1016615665516 in words is "one trillion, sixteen billion, six hundred fifteen million, six hundred sixty-five thousand, five hundred sixteen".