258865243670 has 16 divisors (see below), whose sum is σ = 508317205968. Its totient is φ = 94132815840.

The previous prime is 258865243667. The next prime is 258865243697. The reversal of 258865243670 is 76342568852.

It is a super-2 number, since 2×258865243670² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1176660089 + ... + 1176660308.

It is an arithmetic number, because the mean of its divisors is an integer number (31769825373).

Almost surely, 2^258865243670 is an apocalyptic number.

258865243670 is a deficient number, since it is larger than the sum of its proper divisors (249451962298).

258865243670 is a wasteful number, since it uses less digits than its factorization.

258865243670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353320415.

The product of its (nonzero) digits is 19353600, while the sum is 56.

The spelling of 258865243670 in words is "two hundred fifty-eight billion, eight hundred sixty-five million, two hundred forty-three thousand, six hundred seventy".