2155219445976 has 32 divisors (see below), whose sum is σ = 5388503516160. Its totient is φ = 718345828512.

The previous prime is 2155219445933. The next prime is 2155219446013. The reversal of 2155219445976 is 6795449125512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3500200 + ... + 4069623.

It is an arithmetic number, because the mean of its divisors is an integer number (168390734880).

Almost surely, 2^{2155219445976} is an apocalyptic number.

It is an amenable number.

2155219445976 is an abundant number, since it is smaller than the sum of its proper divisors (3233284070184).

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

2155219445976 is a wasteful number, since it uses less digits than its factorization.

2155219445976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581695 (or 7581691 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 60.

The spelling of 2155219445976 in words is "two trillion, one hundred fifty-five billion, two hundred nineteen million, four hundred forty-five thousand, nine hundred seventy-six".