23091205530 has 16 divisors (see below), whose sum is σ = 55418893344. Its totient is φ = 6157654800.

The previous prime is 23091205517. The next prime is 23091205531. The reversal of 23091205530 is 3550219032.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 769706851 = 23091205530 / (2 + 3 + 0 + 9 + 1 + 2 + 0 + 5 + 5 + 3 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23091205531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384853396 + ... + 384853455.

It is an arithmetic number, because the mean of its divisors is an integer number (3463680834).

Almost surely, 2^23091205530 is an apocalyptic number.

23091205530 is an abundant number, since it is smaller than the sum of its proper divisors (32327687814).

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

23091205530 is a wasteful number, since it uses less digits than its factorization.

23091205530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769706861.

The product of its (nonzero) digits is 8100, while the sum is 30.

The spelling of 23091205530 in words is "twenty-three billion, ninety-one million, two hundred five thousand, five hundred thirty".