23540501220 has 96 divisors (see below), whose sum is σ = 66374017920. Its totient is φ = 6233702400.

The previous prime is 23540501213. The next prime is 23540501227. The reversal of 23540501220 is 2210504532.

It is an interprime number because it is at equal distance from previous prime (23540501213) and next prime (23540501227).

It is not an unprimeable number, because it can be changed into a prime (23540501227) 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, 12382270 + ... + 12384170.

It is an arithmetic number, because the mean of its divisors is an integer number (691396020).

Almost surely, 2^23540501220 is an apocalyptic number.

23540501220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23540501220 is an abundant number, since it is smaller than the sum of its proper divisors (42833516700).

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

23540501220 is a wasteful number, since it uses less digits than its factorization.

23540501220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245 (or 3243 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 23540501220 in words is "twenty-three billion, five hundred forty million, five hundred one thousand, two hundred twenty".