2151611564612 has 48 divisors (see below), whose sum is σ = 3909349785600. Its totient is φ = 1034930413440.

The previous prime is 2151611564593. The next prime is 2151611564647. The reversal of 2151611564612 is 2164651161512.

It is a self number, because there is not a number n which added to its sum of digits gives 2151611564612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44003714 + ... + 44052582.

It is an arithmetic number, because the mean of its divisors is an integer number (81444787200).

Almost surely, 2^{2151611564612} is an apocalyptic number.

It is an amenable number.

2151611564612 is a deficient number, since it is larger than the sum of its proper divisors (1757738220988).

2151611564612 is a wasteful number, since it uses less digits than its factorization.

2151611564612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50276 (or 50274 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The spelling of 2151611564612 in words is "two trillion, one hundred fifty-one billion, six hundred eleven million, five hundred sixty-four thousand, six hundred twelve".