2155643156144 has 20 divisors (see below), whose sum is σ = 4176584567640. Its totient is φ = 1077814880640.

The previous prime is 2155643156129. The next prime is 2155643156167. The reversal of 2155643156144 is 4416513465512.

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, 3167999 + ... + 3787809.

It is an arithmetic number, because the mean of its divisors is an integer number (208829228382).

Almost surely, 2^{2155643156144} is an apocalyptic number.

It is an amenable number.

2155643156144 is a deficient number, since it is larger than the sum of its proper divisors (2020941411496).

2155643156144 is a wasteful number, since it uses less digits than its factorization.

2155643156144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837188 (or 837182 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 47.

The spelling of 2155643156144 in words is "two trillion, one hundred fifty-five billion, six hundred forty-three million, one hundred fifty-six thousand, one hundred forty-four".