258003873666 has 96 divisors (see below), whose sum is σ = 697092784128. Its totient is φ = 66999834720.

The previous prime is 258003873643. The next prime is 258003873697. The reversal of 258003873666 is 666378300852.

It is a super-2 number, since 2×258003873666² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7610245 + ... + 7644071.

It is an arithmetic number, because the mean of its divisors is an integer number (7261383168).

Almost surely, 2^258003873666 is an apocalyptic number.

258003873666 is an abundant number, since it is smaller than the sum of its proper divisors (439088910462).

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

258003873666 is a wasteful number, since it uses less digits than its factorization.

258003873666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39356 (or 39353 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 258003873666 in words is "two hundred fifty-eight billion, three million, eight hundred seventy-three thousand, six hundred sixty-six".