258663338513 has 4 divisors (see below), whose sum is σ = 258665045940. Its totient is φ = 258661631088.

The previous prime is 258663338503. The next prime is 258663338533. The reversal of 258663338513 is 315833366852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192152475904 + 66510862609 = 438352^2 + 257897^2 .

It is a cyclic number.

It is not a de Polignac number, because 258663338513 - 2⁸ = 258663338257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258663338503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601670 + ... + 937727.

It is an arithmetic number, because the mean of its divisors is an integer number (64666261485).

Almost surely, 2^258663338513 is an apocalyptic number.

It is an amenable number.

258663338513 is a deficient number, since it is larger than the sum of its proper divisors (1707427).

258663338513 is a wasteful number, since it uses less digits than its factorization.

258663338513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707426.

The product of its digits is 9331200, while the sum is 53.

The spelling of 258663338513 in words is "two hundred fifty-eight billion, six hundred sixty-three million, three hundred thirty-eight thousand, five hundred thirteen".