258887890052420 has 24 divisors (see below), whose sum is σ = 543688088036184. Its totient is φ = 103550676225536.

The previous prime is 258887890052381. The next prime is 258887890052431. The reversal of 258887890052420 is 24250098788852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1261250286916 + 257626639765504 = 1123054^2 + 16050752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279513317 + ... + 280437996.

It is an arithmetic number, because the mean of its divisors is an integer number (22653670334841).

Almost surely, 2^{258887890052420} is an apocalyptic number.

258887890052420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258887890052420 is an abundant number, since it is smaller than the sum of its proper divisors (284800197983764).

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

258887890052420 is a wasteful number, since it uses less digits than its factorization.

258887890052420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559974439 (or 559974437 counting only the distinct ones).

The product of its (nonzero) digits is 206438400, while the sum is 68.

The spelling of 258887890052420 in words is "two hundred fifty-eight trillion, eight hundred eighty-seven billion, eight hundred ninety million, fifty-two thousand, four hundred twenty".