12156263057 has 2 divisors, whose sum is σ = 12156263058. Its totient is φ = 12156263056.

The previous prime is 12156263029. The next prime is 12156263101. The reversal of 12156263057 is 75036265121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12119587921 + 36675136 = 110089^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 12156263057 - 2⁸ = 12156262801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12156263057.

It is not a weakly prime, because it can be changed into another prime (12156263557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078131528 + 6078131529.

It is an arithmetic number, because the mean of its divisors is an integer number (6078131529).

Almost surely, 2^12156263057 is an apocalyptic number.

It is an amenable number.

12156263057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12156263057 is an equidigital number, since it uses as much as digits as its factorization.

12156263057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 12156263057 in words is "twelve billion, one hundred fifty-six million, two hundred sixty-three thousand, fifty-seven".