181426241544 has 128 divisors (see below), whose sum is σ = 462620160000. Its totient is φ = 59282302464.

The previous prime is 181426241489. The next prime is 181426241561. The reversal of 181426241544 is 445142624181.

It is a super-2 number, since 2×181426241544² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181426241496 and 181426241505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155997907 + ... + 155999069.

It is an arithmetic number, because the mean of its divisors is an integer number (3614220000).

Almost surely, 2^181426241544 is an apocalyptic number.

It is an amenable number.

181426241544 is an abundant number, since it is smaller than the sum of its proper divisors (281193918456).

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

181426241544 is a wasteful number, since it uses less digits than its factorization.

181426241544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827 (or 1823 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The spelling of 181426241544 in words is "one hundred eighty-one billion, four hundred twenty-six million, two hundred forty-one thousand, five hundred forty-four".