12578505361 has 8 divisors (see below), whose sum is σ = 12714697184. Its totient is φ = 12442446720.

The previous prime is 12578505341. The next prime is 12578505371. The reversal of 12578505361 is 16350587521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12578505361 - 2²¹ = 12576408209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12578505341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162826 + ... + 227308.

It is an arithmetic number, because the mean of its divisors is an integer number (1589337148).

Almost surely, 2^12578505361 is an apocalyptic number.

It is an amenable number.

12578505361 is a deficient number, since it is larger than the sum of its proper divisors (136191823).

12578505361 is an equidigital number, since it uses as much as digits as its factorization.

12578505361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66591.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 12578505361 in words is "twelve billion, five hundred seventy-eight million, five hundred five thousand, three hundred sixty-one".