181000120111023 has 32 divisors (see below), whose sum is σ = 250869393685504. Its totient is φ = 115994941235712.

The previous prime is 181000120111003. The next prime is 181000120111037. The reversal of 181000120111023 is 320111021000181.

It is not a de Polignac number, because 181000120111023 - 2¹⁸ = 181000119848879 is a prime.

It is a super-2 number, since 2×181000120111023² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181000120111003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16396486 + ... + 25116627.

It is an arithmetic number, because the mean of its divisors is an integer number (7839668552672).

Almost surely, 2^{181000120111023} is an apocalyptic number.

181000120111023 is a deficient number, since it is larger than the sum of its proper divisors (69869273574481).

181000120111023 is a wasteful number, since it uses less digits than its factorization.

181000120111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41513695.

The product of its (nonzero) digits is 96, while the sum is 21.

The spelling of 181000120111023 in words is "one hundred eighty-one trillion, one hundred twenty million, one hundred eleven thousand, twenty-three".