23337519421 has 4 divisors (see below), whose sum is σ = 24142261500. Its totient is φ = 22532777344.

The previous prime is 23337519419. The next prime is 23337519427. The reversal of 23337519421 is 12491573332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16528959225 + 6808560196 = 128565^2 + 82514^2 .

It is a cyclic number.

It is not a de Polignac number, because 23337519421 - 2¹ = 23337519419 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 (23337519427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402370996 + ... + 402371053.

It is an arithmetic number, because the mean of its divisors is an integer number (6035565375).

Almost surely, 2^23337519421 is an apocalyptic number.

It is an amenable number.

23337519421 is a deficient number, since it is larger than the sum of its proper divisors (804742079).

23337519421 is an equidigital number, since it uses as much as digits as its factorization.

23337519421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804742078.

The product of its digits is 136080, while the sum is 40.

The spelling of 23337519421 in words is "twenty-three billion, three hundred thirty-seven million, five hundred nineteen thousand, four hundred twenty-one".