23500121140 has 12 divisors (see below), whose sum is σ = 49350254436. Its totient is φ = 9400048448.

The previous prime is 23500121129. The next prime is 23500121143. The reversal of 23500121140 is 4112100532.

It can be written as a sum of positive squares in 2 ways, for example, as 16385536036 + 7114585104 = 128006^2 + 84348^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23500121143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587503009 + ... + 587503048.

It is an arithmetic number, because the mean of its divisors is an integer number (4112521203).

Almost surely, 2^23500121140 is an apocalyptic number.

23500121140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23500121140 is an abundant number, since it is smaller than the sum of its proper divisors (25850133296).

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

23500121140 is a wasteful number, since it uses less digits than its factorization.

23500121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175006066 (or 1175006064 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 23500121140 its reverse (4112100532), we get a palindrome (27612221672).

The spelling of 23500121140 in words is "twenty-three billion, five hundred million, one hundred twenty-one thousand, one hundred forty".