23513452040 has 64 divisors (see below), whose sum is σ = 56993025600. Its totient is φ = 8679128832.

The previous prime is 23513452037. The next prime is 23513452057. The reversal of 23513452040 is 4025431532.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23513451994 and 23513452012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2409491 + ... + 2419229.

It is an arithmetic number, because the mean of its divisors is an integer number (890516025).

Almost surely, 2^23513452040 is an apocalyptic number.

23513452040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23513452040 is an abundant number, since it is smaller than the sum of its proper divisors (33479573560).

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

23513452040 is a wasteful number, since it uses less digits than its factorization.

23513452040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14406 (or 14402 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 23513452040 its reverse (4025431532), we get a palindrome (27538883572).

The spelling of 23513452040 in words is "twenty-three billion, five hundred thirteen million, four hundred fifty-two thousand, forty".