23105356506 has 96 divisors (see below), whose sum is σ = 53896617216. Its totient is φ = 7128000000.

The previous prime is 23105356471. The next prime is 23105356553. The reversal of 23105356506 is 60565350132.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4664331 + ... + 4669281.

It is an arithmetic number, because the mean of its divisors is an integer number (561423096).

Almost surely, 2^23105356506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23105356506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26948308608).

23105356506 is an abundant number, since it is smaller than the sum of its proper divisors (30791260710).

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

23105356506 is a wasteful number, since it uses less digits than its factorization.

23105356506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228 (or 5225 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 23105356506 in words is "twenty-three billion, one hundred five million, three hundred fifty-six thousand, five hundred six".