258840493240 has 128 divisors (see below), whose sum is σ = 671328092160. Its totient is φ = 87981272064.

The previous prime is 258840493231. The next prime is 258840493267. The reversal of 258840493240 is 42394048852.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 95406124 + ... + 95408836.

It is an arithmetic number, because the mean of its divisors is an integer number (5244750720).

Almost surely, 2^258840493240 is an apocalyptic number.

258840493240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258840493240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335664046080).

258840493240 is an abundant number, since it is smaller than the sum of its proper divisors (412487598920).

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

258840493240 is a wasteful number, since it uses less digits than its factorization.

258840493240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 258840493240 in words is "two hundred fifty-eight billion, eight hundred forty million, four hundred ninety-three thousand, two hundred forty".