2180915523228 has 24 divisors (see below), whose sum is σ = 5480249263888. Its totient is φ = 671050930176.

The previous prime is 2180915523223. The next prime is 2180915523229. The reversal of 2180915523228 is 8223255190812.

It is a super-2 number, since 2×2180915523228² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180915523223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6990113701 + ... + 6990114012.

Almost surely, 2^{2180915523228} is an apocalyptic number.

It is an amenable number.

2180915523228 is an abundant number, since it is smaller than the sum of its proper divisors (3299333740660).

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

2180915523228 is a wasteful number, since it uses less digits than its factorization.

2180915523228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13980227733 (or 13980227731 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 2180915523228 in words is "two trillion, one hundred eighty billion, nine hundred fifteen million, five hundred twenty-three thousand, two hundred twenty-eight".