23818026427421 has 4 divisors (see below), whose sum is σ = 23873288670144. Its totient is φ = 23762764184700.

The previous prime is 23818026427267. The next prime is 23818026427423. The reversal of 23818026427421 is 12472462081832.

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 not a de Polignac number, because 23818026427421 - 2²⁶ = 23817959318557 is a prime.

It is a super-2 number, since 2×23818026427421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23818026427421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23818026427423) 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, 27631120715 + ... + 27631121576.

It is an arithmetic number, because the mean of its divisors is an integer number (5968322167536).

Almost surely, 2^{23818026427421} is an apocalyptic number.

It is an amenable number.

23818026427421 is a deficient number, since it is larger than the sum of its proper divisors (55262242723).

23818026427421 is an equidigital number, since it uses as much as digits as its factorization.

23818026427421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55262242722.

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 23818026427421 in words is "twenty-three trillion, eight hundred eighteen billion, twenty-six million, four hundred twenty-seven thousand, four hundred twenty-one".