12578033407 has 4 divisors (see below), whose sum is σ = 12578340096. Its totient is φ = 12577726720.

The previous prime is 12578033401. The next prime is 12578033417. The reversal of 12578033407 is 70433087521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70433087521 = 2113 ⋅33333217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12578033407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12578033407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578033401) 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, 80194 + ... + 177727.

It is an arithmetic number, because the mean of its divisors is an integer number (3144585024).

Almost surely, 2^12578033407 is an apocalyptic number.

12578033407 is a deficient number, since it is larger than the sum of its proper divisors (306689).

12578033407 is an equidigital number, since it uses as much as digits as its factorization.

12578033407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306688.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 12578033407 in words is "twelve billion, five hundred seventy-eight million, thirty-three thousand, four hundred seven".