258217893820 has 48 divisors (see below), whose sum is σ = 544657932000. Its totient is φ = 102830663936.

The previous prime is 258217893767. The next prime is 258217893833. The reversal of 258217893820 is 28398712852.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5914431 + ... + 5957929.

It is an arithmetic number, because the mean of its divisors is an integer number (11347040250).

Almost surely, 2^258217893820 is an apocalyptic number.

258217893820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258217893820 is an abundant number, since it is smaller than the sum of its proper divisors (286440038180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258217893820 is a wasteful number, since it uses less digits than its factorization.

258217893820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44814 (or 44812 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 258217893820 in words is "two hundred fifty-eight billion, two hundred seventeen million, eight hundred ninety-three thousand, eight hundred twenty".