181409013120 has 64 divisors (see below), whose sum is σ = 578241235440. Its totient is φ = 48375736320.

The previous prime is 181409013083. The next prime is 181409013127. The reversal of 181409013120 is 21310904181.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181409013127) 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, 47240011 + ... + 47243850.

Almost surely, 2^181409013120 is an apocalyptic number.

181409013120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181409013120 is an abundant number, since it is smaller than the sum of its proper divisors (396832222320).

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

181409013120 is an equidigital number, since it uses as much as digits as its factorization.

181409013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94483883 (or 94483871 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 181409013120 in words is "one hundred eighty-one billion, four hundred nine million, thirteen thousand, one hundred twenty".