2156450057444 has 12 divisors (see below), whose sum is σ = 3779566759164. Its totient is φ = 1076573840544.

The previous prime is 2156450057393. The next prime is 2156450057453. The reversal of 2156450057444 is 4447500546512.

It can be written as a sum of positive squares in 2 ways, for example, as 1324501756900 + 831948300544 = 1150870^2 + 912112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412794107 + ... + 412799330.

It is an arithmetic number, because the mean of its divisors is an integer number (314963896597).

Almost surely, 2^{2156450057444} is an apocalyptic number.

It is an amenable number.

2156450057444 is a deficient number, since it is larger than the sum of its proper divisors (1623116701720).

2156450057444 is a wasteful number, since it uses less digits than its factorization.

2156450057444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825594094 (or 825594092 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 47.

The spelling of 2156450057444 in words is "two trillion, one hundred fifty-six billion, four hundred fifty million, fifty-seven thousand, four hundred forty-four".