2155032440144 has 20 divisors (see below), whose sum is σ = 4175610121824. Its totient is φ = 1077455634528.

The previous prime is 2155032440129. The next prime is 2155032440167. The reversal of 2155032440144 is 4410442305512.

It is a happy number.

It is a congruent number.

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, 3492452 + ... + 4062915.

Almost surely, 2^{2155032440144} is an apocalyptic number.

It is an amenable number.

2155032440144 is a deficient number, since it is larger than the sum of its proper divisors (2020577681680).

2155032440144 is a wasteful number, since it uses less digits than its factorization.

2155032440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573202 (or 7573196 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 2155032440144 its reverse (4410442305512), we get a palindrome (6565474745656).

The spelling of 2155032440144 in words is "two trillion, one hundred fifty-five billion, thirty-two million, four hundred forty thousand, one hundred forty-four".