23729564512240 has 80 divisors (see below), whose sum is σ = 55401514540416. Its totient is φ = 9452251065600.

The previous prime is 23729564512169. The next prime is 23729564512249. The reversal of 23729564512240 is 4221546592732.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23729564512249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35233855 + ... + 35901025.

Almost surely, 2^{23729564512240} is an apocalyptic number.

23729564512240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23729564512240 is an abundant number, since it is smaller than the sum of its proper divisors (31671950028176).

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

23729564512240 is a wasteful number, since it uses less digits than its factorization.

23729564512240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669038 (or 669032 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 23729564512240 in words is "twenty-three trillion, seven hundred twenty-nine billion, five hundred sixty-four million, five hundred twelve thousand, two hundred forty".