181378432993016 has 32 divisors (see below), whose sum is σ = 390216549098880. Its totient is φ = 77423918460000.

The previous prime is 181378432993001. The next prime is 181378432993019. The reversal of 181378432993016 is 610399234873181.

181378432993016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181378432993019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6451979150 + ... + 6452007261.

It is an arithmetic number, because the mean of its divisors is an integer number (12194267159340).

Almost surely, 2^{181378432993016} is an apocalyptic number.

It is an amenable number.

181378432993016 is an abundant number, since it is smaller than the sum of its proper divisors (208838116105864).

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

181378432993016 is a wasteful number, since it uses less digits than its factorization.

181378432993016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12903986675 (or 12903986671 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 65.

The spelling of 181378432993016 in words is "one hundred eighty-one trillion, three hundred seventy-eight billion, four hundred thirty-two million, nine hundred ninety-three thousand, sixteen".