2156445415223 has 32 divisors (see below), whose sum is σ = 2486068865280. Its totient is φ = 1849904352000.

The previous prime is 2156445415207. The next prime is 2156445415231. The reversal of 2156445415223 is 3225145446512.

It is a cyclic number.

It is not a de Polignac number, because 2156445415223 - 2⁴ = 2156445415207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156445415283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294150668 + ... + 294157998.

It is an arithmetic number, because the mean of its divisors is an integer number (77689652040).

Almost surely, 2^{2156445415223} is an apocalyptic number.

2156445415223 is a deficient number, since it is larger than the sum of its proper divisors (329623450057).

2156445415223 is a wasteful number, since it uses less digits than its factorization.

2156445415223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12719.

The product of its digits is 1152000, while the sum is 44.

The spelling of 2156445415223 in words is "two trillion, one hundred fifty-six billion, four hundred forty-five million, four hundred fifteen thousand, two hundred twenty-three".