23921358938 has 8 divisors (see below), whose sum is σ = 36237306420. Its totient is φ = 11842256800.

The previous prime is 23921358919. The next prime is 23921358941. The reversal of 23921358938 is 83985312932.

It can be written as a sum of positive squares in 2 ways, for example, as 22703558329 + 1217800609 = 150677^2 + 34897^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 23921358938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59211083 + ... + 59211486.

Almost surely, 2^23921358938 is an apocalyptic number.

23921358938 is a deficient number, since it is larger than the sum of its proper divisors (12315947482).

23921358938 is a wasteful number, since it uses less digits than its factorization.

23921358938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118422672.

The product of its digits is 2799360, while the sum is 53.

The spelling of 23921358938 in words is "twenty-three billion, nine hundred twenty-one million, three hundred fifty-eight thousand, nine hundred thirty-eight".