2155554821480 has 32 divisors (see below), whose sum is σ = 5135292370440. Its totient is φ = 811502991360.

The previous prime is 2155554821471. The next prime is 2155554821543. The reversal of 2155554821480 is 841284555512.

It can be written as a sum of positive squares in 4 ways, for example, as 2096953063396 + 58601758084 = 1448086^2 + 242078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584966101 + ... + 1584967460.

Almost surely, 2^{2155554821480} is an apocalyptic number.

2155554821480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2155554821480 is an abundant number, since it is smaller than the sum of its proper divisors (2979737548960).

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

2155554821480 is a wasteful number, since it uses less digits than its factorization.

2155554821480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169933589 (or 3169933585 counting only the distinct ones).

The product of its (nonzero) digits is 2560000, while the sum is 50.

The spelling of 2155554821480 in words is "two trillion, one hundred fifty-five billion, five hundred fifty-four million, eight hundred twenty-one thousand, four hundred eighty".