258812218823 has 2 divisors, whose sum is σ = 258812218824. Its totient is φ = 258812218822.

The previous prime is 258812218789. The next prime is 258812218871. The reversal of 258812218823 is 328812218852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258812218823 - 2¹⁸ = 258811956679 is a prime.

It is a super-2 number, since 2×258812218823² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258812212823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129406109411 + 129406109412.

It is an arithmetic number, because the mean of its divisors is an integer number (129406109412).

Almost surely, 2^258812218823 is an apocalyptic number.

258812218823 is a deficient number, since it is larger than the sum of its proper divisors (1).

258812218823 is an equidigital number, since it uses as much as digits as its factorization.

258812218823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 983040, while the sum is 50.

The spelling of 258812218823 in words is "two hundred fifty-eight billion, eight hundred twelve million, two hundred eighteen thousand, eight hundred twenty-three".