12392778089251 has 16 divisors (see below), whose sum is σ = 14375103690240. Its totient is φ = 10463446540800.

The previous prime is 12392778089233. The next prime is 12392778089257. The reversal of 12392778089251 is 15298087729321.

It is a cyclic number.

It is not a de Polignac number, because 12392778089251 - 2⁹ = 12392778088739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12392778089257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12406851 + ... + 13368451.

It is an arithmetic number, because the mean of its divisors is an integer number (898443980640).

Almost surely, 2^{12392778089251} is an apocalyptic number.

12392778089251 is a deficient number, since it is larger than the sum of its proper divisors (1982325600989).

12392778089251 is an equidigital number, since it uses as much as digits as its factorization.

12392778089251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989154.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 12392778089251 in words is "twelve trillion, three hundred ninety-two billion, seven hundred seventy-eight million, eighty-nine thousand, two hundred fifty-one".