23221857374 has 4 divisors (see below), whose sum is σ = 34832786064. Its totient is φ = 11610928686.

The previous prime is 23221857371. The next prime is 23221857389. The reversal of 23221857374 is 47375812232.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221857371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5805464342 + ... + 5805464345.

It is an arithmetic number, because the mean of its divisors is an integer number (8708196516).

Almost surely, 2^23221857374 is an apocalyptic number.

23221857374 is a deficient number, since it is larger than the sum of its proper divisors (11610928690).

23221857374 is a wasteful number, since it uses less digits than its factorization.

23221857374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11610928689.

The product of its digits is 564480, while the sum is 44.

The spelling of 23221857374 in words is "twenty-three billion, two hundred twenty-one million, eight hundred fifty-seven thousand, three hundred seventy-four".