23723712440 has 16 divisors (see below), whose sum is σ = 53378353080. Its totient is φ = 9489484960.

The previous prime is 23723712431. The next prime is 23723712443. The reversal of 23723712440 is 4421732732.

It is a self number, because there is not a number n which added to its sum of digits gives 23723712440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23723712443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296546366 + ... + 296546445.

Almost surely, 2^23723712440 is an apocalyptic number.

23723712440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23723712440 is an abundant number, since it is smaller than the sum of its proper divisors (29654640640).

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

23723712440 is a wasteful number, since it uses less digits than its factorization.

23723712440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593092822 (or 593092818 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The spelling of 23723712440 in words is "twenty-three billion, seven hundred twenty-three million, seven hundred twelve thousand, four hundred forty".