2155616214516 has 72 divisors (see below), whose sum is σ = 5665138752000. Its totient is φ = 690275234880.

The previous prime is 2155616214511. The next prime is 2155616214547. The reversal of 2155616214516 is 6154126165512.

2155616214516 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 6 + 1 + 621 + 4 + 5 + 16 = 666.

It is a super-2 number, since 2×2155616214516² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155616214511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4980100 + ... + 5395611.

Almost surely, 2^{2155616214516} is an apocalyptic number.

It is an amenable number.

2155616214516 is an abundant number, since it is smaller than the sum of its proper divisors (3509522537484).

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

2155616214516 is a wasteful number, since it uses less digits than its factorization.

2155616214516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375949 (or 10375944 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The spelling of 2155616214516 in words is "two trillion, one hundred fifty-five billion, six hundred sixteen million, two hundred fourteen thousand, five hundred sixteen".