23122552005 has 96 divisors (see below), whose sum is σ = 47845324800. Its totient is φ = 10493727552.

The previous prime is 23122552001. The next prime is 23122552069. The reversal of 23122552005 is 50025522132.

23122552005 is a `hidden beast` number, since 231 + 225 + 5 + 200 + 5 = 666.

It is not a de Polignac number, because 23122552005 - 2² = 23122552001 is a prime.

It is a super-2 number, since 2×23122552005² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 23122552005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122552001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1172416 + ... + 1191974.

It is an arithmetic number, because the mean of its divisors is an integer number (498388800).

Almost surely, 2^23122552005 is an apocalyptic number.

It is an amenable number.

23122552005 is an abundant number, since it is smaller than the sum of its proper divisors (24722772795).

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

23122552005 is a wasteful number, since it uses less digits than its factorization.

23122552005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19725 (or 19713 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 23122552005 in words is "twenty-three billion, one hundred twenty-two million, five hundred fifty-two thousand, five".