13078123585 has 8 divisors (see below), whose sum is σ = 15694399656. Its totient is φ = 10462064640.

The previous prime is 13078123573. The next prime is 13078123607. The reversal of 13078123585 is 58532187031.

It can be written as a sum of positive squares in 4 ways, for example, as 2904778816 + 10173344769 = 53896^2 + 100863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13078123585 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144255 + ... + 216715.

It is an arithmetic number, because the mean of its divisors is an integer number (1961799957).

Almost surely, 2^13078123585 is an apocalyptic number.

It is an amenable number.

13078123585 is a deficient number, since it is larger than the sum of its proper divisors (2616276071).

13078123585 is an equidigital number, since it uses as much as digits as its factorization.

13078123585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108563.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 13078123585 in words is "thirteen billion, seventy-eight million, one hundred twenty-three thousand, five hundred eighty-five".