5581631581900 has 72 divisors (see below), whose sum is σ = 13213680270336. Its totient is φ = 2029617230400.

The previous prime is 5581631581879. The next prime is 5581631581907. The reversal of 5581631581900 is 91851361855.

It is a super-2 number, since 2×5581631581900² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5581631581907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43635837 + ... + 43763563.

It is an arithmetic number, because the mean of its divisors is an integer number (183523337088).

Almost surely, 2^{5581631581900} is an apocalyptic number.

5581631581900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5581631581900 is an abundant number, since it is smaller than the sum of its proper divisors (7632048688436).

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

5581631581900 is a wasteful number, since it uses less digits than its factorization.

5581631581900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167479 (or 167472 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 52.

The spelling of 5581631581900 in words is "five trillion, five hundred eighty-one billion, six hundred thirty-one million, five hundred eighty-one thousand, nine hundred".