13078018258 has 4 divisors (see below), whose sum is σ = 19617027390. Its totient is φ = 6539009128.

The previous prime is 13078018241. The next prime is 13078018259. The reversal of 13078018258 is 85281087031.

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

It can be written as a sum of positive squares in only one way, i.e., 9009236889 + 4068781369 = 94917^2 + 63787^2 .

It is not an unprimeable number, because it can be changed into a prime (13078018259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269504563 + ... + 3269504566.

Almost surely, 2^13078018258 is an apocalyptic number.

13078018258 is a deficient number, since it is larger than the sum of its proper divisors (6539009132).

13078018258 is an equidigital number, since it uses as much as digits as its factorization.

13078018258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539009131.

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 13078018258 in words is "thirteen billion, seventy-eight million, eighteen thousand, two hundred fifty-eight".