23071216421 has 8 divisors (see below), whose sum is σ = 25173367488. Its totient is φ = 20969860000.

The previous prime is 23071216417. The next prime is 23071216451. The reversal of 23071216421 is 12461217032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23071216421 - 2² = 23071216417 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 (23071216451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137120 + ... + 254841.

It is an arithmetic number, because the mean of its divisors is an integer number (3146670936).

Almost surely, 2^23071216421 is an apocalyptic number.

It is an amenable number.

23071216421 is a deficient number, since it is larger than the sum of its proper divisors (2102151067).

23071216421 is a wasteful number, since it uses less digits than its factorization.

23071216421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397323.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 23071216421 in words is "twenty-three billion, seventy-one million, two hundred sixteen thousand, four hundred twenty-one".