23996896421 has 4 divisors (see below), whose sum is σ = 24081691392. Its totient is φ = 23912101452.

The previous prime is 23996896403. The next prime is 23996896433. The reversal of 23996896421 is 12469869932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23996896421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23996893421) 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, 42397061 + ... + 42397626.

It is an arithmetic number, because the mean of its divisors is an integer number (6020422848).

Almost surely, 2^23996896421 is an apocalyptic number.

It is an amenable number.

23996896421 is a deficient number, since it is larger than the sum of its proper divisors (84794971).

23996896421 is an equidigital number, since it uses as much as digits as its factorization.

23996896421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84794970.

The product of its digits is 10077696, while the sum is 59.

The spelling of 23996896421 in words is "twenty-three billion, nine hundred ninety-six million, eight hundred ninety-six thousand, four hundred twenty-one".