23155544622 has 64 divisors (see below), whose sum is σ = 53867151360. Its totient is φ = 6498526944.

The previous prime is 23155544617. The next prime is 23155544627. The reversal of 23155544622 is 22644555132.

It is an interprime number because it is at equal distance from previous prime (23155544617) and next prime (23155544627).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155544627) 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, 3919723 + ... + 3925625.

It is an arithmetic number, because the mean of its divisors is an integer number (841674240).

Almost surely, 2^23155544622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23155544622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26933575680).

23155544622 is an abundant number, since it is smaller than the sum of its proper divisors (30711606738).

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

23155544622 is a wasteful number, since it uses less digits than its factorization.

23155544622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557.

The product of its digits is 288000, while the sum is 39.

The spelling of 23155544622 in words is "twenty-three billion, one hundred fifty-five million, five hundred forty-four thousand, six hundred twenty-two".