2151656655655 has 8 divisors (see below), whose sum is σ = 2780602447392. Its totient is φ = 1588915684128.

The previous prime is 2151656655637. The next prime is 2151656655749. The reversal of 2151656655655 is 5565566561512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151656655655 - 2²⁹ = 2151119784743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151656655655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16551204979 + ... + 16551205108.

It is an arithmetic number, because the mean of its divisors is an integer number (347575305924).

Almost surely, 2^{2151656655655} is an apocalyptic number.

2151656655655 is a deficient number, since it is larger than the sum of its proper divisors (628945791737).

2151656655655 is a wasteful number, since it uses less digits than its factorization.

2151656655655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33102410105.

The product of its digits is 40500000, while the sum is 58.

The spelling of 2151656655655 in words is "two trillion, one hundred fifty-one billion, six hundred fifty-six million, six hundred fifty-five thousand, six hundred fifty-five".