12278894511779 has 8 divisors (see below), whose sum is σ = 14643153703680. Its totient is φ = 10067168171016.

The previous prime is 12278894511749. The next prime is 12278894511799. The reversal of 12278894511779 is 97711549887221.

12278894511779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12278894511779 - 2²⁸ = 12278626076323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12278894511749) 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, 38133212609 + ... + 38133212930.

It is an arithmetic number, because the mean of its divisors is an integer number (1830394212960).

Almost surely, 2^{12278894511779} is an apocalyptic number.

12278894511779 is a deficient number, since it is larger than the sum of its proper divisors (2364259191901).

12278894511779 is an equidigital number, since it uses as much as digits as its factorization.

12278894511779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76266425569.

The product of its digits is 142248960, while the sum is 71.

The spelling of 12278894511779 in words is "twelve trillion, two hundred seventy-eight billion, eight hundred ninety-four million, five hundred eleven thousand, seven hundred seventy-nine".