23155440330 has 64 divisors (see below), whose sum is σ = 60640731648. Its totient is φ = 5611997760.

The previous prime is 23155440293. The next prime is 23155440377. The reversal of 23155440330 is 3304455132.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1869217 + ... + 1881563.

It is an arithmetic number, because the mean of its divisors is an integer number (947511432).

Almost surely, 2^23155440330 is an apocalyptic number.

23155440330 is an abundant number, since it is smaller than the sum of its proper divisors (37485291318).

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

23155440330 is a wasteful number, since it uses less digits than its factorization.

23155440330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18051.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 23155440330 its reverse (3304455132), we get a palindrome (26459895462).

The spelling of 23155440330 in words is "twenty-three billion, one hundred fifty-five million, four hundred forty thousand, three hundred thirty".