181135846452 has 24 divisors (see below), whose sum is σ = 461073064032. Its totient is φ = 54889650400.

The previous prime is 181135846439. The next prime is 181135846511. The reversal of 181135846452 is 254648531181.

It is a happy number.

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, 686120499 + ... + 686120762.

It is an arithmetic number, because the mean of its divisors is an integer number (19211377668).

Almost surely, 2^181135846452 is an apocalyptic number.

181135846452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181135846452 is an abundant number, since it is smaller than the sum of its proper divisors (279937217580).

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

181135846452 is a wasteful number, since it uses less digits than its factorization.

181135846452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372241279 (or 1372241277 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The spelling of 181135846452 in words is "one hundred eighty-one billion, one hundred thirty-five million, eight hundred forty-six thousand, four hundred fifty-two".