12156264973 has 2 divisors, whose sum is σ = 12156264974. Its totient is φ = 12156264972.

The previous prime is 12156264899. The next prime is 12156265007. The reversal of 12156264973 is 37946265121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7863787684 + 4292477289 = 88678^2 + 65517^2 .

It is a cyclic number.

It is not a de Polignac number, because 12156264973 - 2¹³ = 12156256781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12156264173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078132486 + 6078132487.

It is an arithmetic number, because the mean of its divisors is an integer number (6078132487).

Almost surely, 2^12156264973 is an apocalyptic number.

It is an amenable number.

12156264973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12156264973 is an equidigital number, since it uses as much as digits as its factorization.

12156264973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The spelling of 12156264973 in words is "twelve billion, one hundred fifty-six million, two hundred sixty-four thousand, nine hundred seventy-three".