12578244671 has 2 divisors, whose sum is σ = 12578244672. Its totient is φ = 12578244670.

The previous prime is 12578244649. The next prime is 12578244727. The reversal of 12578244671 is 17644287521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12578244671 - 2⁶ = 12578244607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12578244571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6289122335 + 6289122336.

It is an arithmetic number, because the mean of its divisors is an integer number (6289122336).

Almost surely, 2^12578244671 is an apocalyptic number.

12578244671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12578244671 is an equidigital number, since it uses as much as digits as its factorization.

12578244671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 47.

The spelling of 12578244671 in words is "twelve billion, five hundred seventy-eight million, two hundred forty-four thousand, six hundred seventy-one".