181148979456 has 81 divisors (see below), whose sum is σ = 522356076151. Its totient is φ = 60376183296.

The previous prime is 181148979443. The next prime is 181148979497. The reversal of 181148979456 is 654979841181.

The square root of 181148979456 is 425616.

It is a perfect power (a square), and thus also a powerful number.

181148979456 is a `hidden beast` number, since 1 + 8 + 11 + 489 + 7 + 94 + 56 = 666.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 181148979393 and 181148979402.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20425135 + ... + 20434001.

Almost surely, 2^181148979456 is an apocalyptic number.

181148979456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

181148979456 is the 425616-th square number.

It is an amenable number.

181148979456 is an abundant number, since it is smaller than the sum of its proper divisors (341207096695).

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

181148979456 is an frugal number, since it uses more digits than its factorization.

181148979456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756 (or 8872 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The spelling of 181148979456 in words is "one hundred eighty-one billion, one hundred forty-eight million, nine hundred seventy-nine thousand, four hundred fifty-six".