23640041520 has 60 divisors (see below), whose sum is σ = 79391141856. Its totient is φ = 6304010880.

The previous prime is 23640041519. The next prime is 23640041521. The reversal of 23640041520 is 2514004632.

23640041520 is a `hidden beast` number, since 2 + 3 + 640 + 0 + 4 + 15 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (23640041519) and next prime (23640041521).

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (23640041521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16415976 + ... + 16417415.

Almost surely, 2^23640041520 is an apocalyptic number.

23640041520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23640041520 is an abundant number, since it is smaller than the sum of its proper divisors (55751100336).

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

23640041520 is a wasteful number, since it uses less digits than its factorization.

23640041520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32833410 (or 32833401 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 23640041520 in words is "twenty-three billion, six hundred forty million, forty-one thousand, five hundred twenty".