2581913128180 has 24 divisors (see below), whose sum is σ = 5427995575968. Its totient is φ = 1031626583328.

The previous prime is 2581913128169. The next prime is 2581913128231. The reversal of 2581913128180 is 818213191852.

It is a happy number.

It is a super-2 number, since 2×2581913128180² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71148154 + ... + 71184433.

It is an arithmetic number, because the mean of its divisors is an integer number (226166482332).

Almost surely, 2^{2581913128180} is an apocalyptic number.

2581913128180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2581913128180 is an abundant number, since it is smaller than the sum of its proper divisors (2846082447788).

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

2581913128180 is a wasteful number, since it uses less digits than its factorization.

2581913128180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142333503 (or 142333501 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 49.

The spelling of 2581913128180 in words is "two trillion, five hundred eighty-one billion, nine hundred thirteen million, one hundred twenty-eight thousand, one hundred eighty".