12578235068617 has 4 divisors (see below), whose sum is σ = 12870752163280. Its totient is φ = 12285717973956.

The previous prime is 12578235068591. The next prime is 12578235068629. The reversal of 12578235068617 is 71686053287521.

It is a happy number.

12578235068617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12578235068617 - 2²³ = 12578226680009 is a prime.

It is a super-3 number, since 3×12578235068617³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12578232068617) 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, 146258547267 + ... + 146258547352.

It is an arithmetic number, because the mean of its divisors is an integer number (3217688040820).

Almost surely, 2^{12578235068617} is an apocalyptic number.

It is an amenable number.

12578235068617 is a deficient number, since it is larger than the sum of its proper divisors (292517094663).

12578235068617 is an equidigital number, since it uses as much as digits as its factorization.

12578235068617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292517094662.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 12578235068617 in words is "twelve trillion, five hundred seventy-eight billion, two hundred thirty-five million, sixty-eight thousand, six hundred seventeen".