2156360078818 has 32 divisors (see below), whose sum is σ = 3559832801280. Its totient is φ = 971508148560.

The previous prime is 2156360078797. The next prime is 2156360078827. The reversal of 2156360078818 is 8188700636512.

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, 1275355 + ... + 2437057.

It is an arithmetic number, because the mean of its divisors is an integer number (111244775040).

Almost surely, 2^{2156360078818} is an apocalyptic number.

2156360078818 is a deficient number, since it is larger than the sum of its proper divisors (1403472722462).

2156360078818 is a wasteful number, since it uses less digits than its factorization.

2156360078818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162462.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 2156360078818 in words is "two trillion, one hundred fifty-six billion, three hundred sixty million, seventy-eight thousand, eight hundred eighteen".