23040013120040 has 128 divisors (see below), whose sum is σ = 60670014197760. Its totient is φ = 7711044117504.

The previous prime is 23040013120037. The next prime is 23040013120043. The reversal of 23040013120040 is 4002131004032.

It is an interprime number because it is at equal distance from previous prime (23040013120037) and next prime (23040013120043).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23040013119994 and 23040013120021.

It is not an unprimeable number, because it can be changed into a prime (23040013120043) 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, 1017032 + ... + 6863991.

It is an arithmetic number, because the mean of its divisors is an integer number (473984485920).

Almost surely, 2^{23040013120040} is an apocalyptic number.

23040013120040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23040013120040 is an abundant number, since it is smaller than the sum of its proper divisors (37630001077720).

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

23040013120040 is a wasteful number, since it uses less digits than its factorization.

23040013120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7881291 (or 7881287 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23040013120040 its reverse (4002131004032), we get a palindrome (27042144124072).

The spelling of 23040013120040 in words is "twenty-three trillion, forty billion, thirteen million, one hundred twenty thousand, forty".