258000805550 has 24 divisors (see below), whose sum is σ = 479911224936. Its totient is φ = 103193929440.

The previous prime is 258000805549. The next prime is 258000805553. The reversal of 258000805550 is 55508000852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258000805553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 701357 + ... + 1003943.

It is an arithmetic number, because the mean of its divisors is an integer number (19996301039).

Almost surely, 2^258000805550 is an apocalyptic number.

258000805550 is a deficient number, since it is larger than the sum of its proper divisors (221910419386).

258000805550 is a wasteful number, since it uses less digits than its factorization.

258000805550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319652 (or 319647 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 38.

The spelling of 258000805550 in words is "two hundred fifty-eight billion, eight hundred five thousand, five hundred fifty".