181880680944 has 40 divisors (see below), whose sum is σ = 470426676480. Its totient is φ = 60553571008.

The previous prime is 181880680937. The next prime is 181880680963. The reversal of 181880680944 is 449086088181.

It is a super-2 number, since 2×181880680944² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 2251224 + ... + 2330615.

It is an arithmetic number, because the mean of its divisors is an integer number (11760666912).

Almost surely, 2^181880680944 is an apocalyptic number.

It is an amenable number.

181880680944 is an abundant number, since it is smaller than the sum of its proper divisors (288545995536).

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

181880680944 is a wasteful number, since it uses less digits than its factorization.

181880680944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582677 (or 4582671 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 57.

The spelling of 181880680944 in words is "one hundred eighty-one billion, eight hundred eighty million, six hundred eighty thousand, nine hundred forty-four".