2156613452605 has 16 divisors (see below), whose sum is σ = 2606654615040. Its totient is φ = 1712812736448.

The previous prime is 2156613452593. The next prime is 2156613452657. The reversal of 2156613452605 is 5062543166512.

It is a cyclic number.

It is not a de Polignac number, because 2156613452605 - 2¹¹ = 2156613450557 is a prime.

It is a congruent number.

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, 26580079 + ... + 26661091.

It is an arithmetic number, because the mean of its divisors is an integer number (162915913440).

Almost surely, 2^{2156613452605} is an apocalyptic number.

It is an amenable number.

2156613452605 is a deficient number, since it is larger than the sum of its proper divisors (450041162435).

2156613452605 is a wasteful number, since it uses less digits than its factorization.

2156613452605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119460.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 2156613452605 in words is "two trillion, one hundred fifty-six billion, six hundred thirteen million, four hundred fifty-two thousand, six hundred five".