258048778009 has 12 divisors (see below), whose sum is σ = 283720965220. Its totient is φ = 234523159200.

The previous prime is 258048777971. The next prime is 258048778021. The reversal of 258048778009 is 900877840852.

It can be written as a sum of positive squares in 2 ways, for example, as 79441113609 + 178607664400 = 281853^2 + 422620^2 .

It is a de Polignac number, because none of the positive numbers 2^k-258048778009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258048778069) 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, 127327 + ... + 729595.

Almost surely, 2^258048778009 is an apocalyptic number.

It is an amenable number.

258048778009 is a deficient number, since it is larger than the sum of its proper divisors (25672187211).

258048778009 is a wasteful number, since it uses less digits than its factorization.

258048778009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605832 (or 605821 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 258048778009 in words is "two hundred fifty-eight billion, forty-eight million, seven hundred seventy-eight thousand, nine".