2155027420880 has 20 divisors (see below), whose sum is σ = 5010438753732. Its totient is φ = 862010968320.

The previous prime is 2155027420801. The next prime is 2155027420919. The reversal of 2155027420880 is 880247205512.

It can be written as a sum of positive squares in 2 ways, for example, as 1103516634256 + 1051510786624 = 1050484^2 + 1025432^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 13468921301 + ... + 13468921460.

Almost surely, 2^{2155027420880} is an apocalyptic number.

2155027420880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155027420880 is an abundant number, since it is smaller than the sum of its proper divisors (2855411332852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155027420880 is a wasteful number, since it uses less digits than its factorization.

2155027420880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26937842774 (or 26937842768 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 44.

The spelling of 2155027420880 in words is "two trillion, one hundred fifty-five billion, twenty-seven million, four hundred twenty thousand, eight hundred eighty".