23501155020 has 96 divisors (see below), whose sum is σ = 75256204800. Its totient is φ = 5367942144.

The previous prime is 23501155009. The next prime is 23501155033. The reversal of 23501155020 is 2055110532.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 606591 + ... + 644169.

It is an arithmetic number, because the mean of its divisors is an integer number (783918800).

Almost surely, 2^23501155020 is an apocalyptic number.

23501155020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23501155020 is an abundant number, since it is smaller than the sum of its proper divisors (51755049780).

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

23501155020 is a wasteful number, since it uses less digits than its factorization.

23501155020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39087 (or 39085 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 23501155020 its reverse (2055110532), we get a palindrome (25556265552).

The spelling of 23501155020 in words is "twenty-three billion, five hundred one million, one hundred fifty-five thousand, twenty".