23033591172 has 36 divisors (see below), whose sum is σ = 58245199740. Its totient is φ = 7675041792.

The previous prime is 23033591153. The next prime is 23033591179. The reversal of 23033591172 is 27119533032.

It is a happy number.

23033591172 is a `hidden beast` number, since 2 + 30 + 33 + 591 + 1 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16642548036 + 6391043136 = 129006^2 + 79944^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23033591179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17097 + ... + 215312.

It is an arithmetic number, because the mean of its divisors is an integer number (1617922215).

Almost surely, 2^23033591172 is an apocalyptic number.

It is an amenable number.

23033591172 is an abundant number, since it is smaller than the sum of its proper divisors (35211608568).

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

23033591172 is a wasteful number, since it uses less digits than its factorization.

23033591172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235172 (or 235167 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The spelling of 23033591172 in words is "twenty-three billion, thirty-three million, five hundred ninety-one thousand, one hundred seventy-two".