181164136496 has 20 divisors (see below), whose sum is σ = 401149159632. Its totient is φ = 77641772736.

The previous prime is 181164136477. The next prime is 181164136499. The reversal of 181164136496 is 694631461181.

It is not an unprimeable number, because it can be changed into a prime (181164136499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808768355 + ... + 808768578.

Almost surely, 2^181164136496 is an apocalyptic number.

181164136496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

181164136496 is an abundant number, since it is smaller than the sum of its proper divisors (219985023136).

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

181164136496 is a wasteful number, since it uses less digits than its factorization.

181164136496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617536948 (or 1617536942 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The spelling of 181164136496 in words is "one hundred eighty-one billion, one hundred sixty-four million, one hundred thirty-six thousand, four hundred ninety-six".