12437522761 has 2 divisors, whose sum is σ = 12437522762. Its totient is φ = 12437522760.

The previous prime is 12437522663. The next prime is 12437522777. The reversal of 12437522761 is 16722573421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8324737600 + 4112785161 = 91240^2 + 64131^2 .

It is a cyclic number.

It is not a de Polignac number, because 12437522761 - 2¹¹ = 12437520713 is a prime.

It is not a weakly prime, because it can be changed into another prime (12437522261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6218761380 + 6218761381.

It is an arithmetic number, because the mean of its divisors is an integer number (6218761381).

Almost surely, 2^12437522761 is an apocalyptic number.

It is an amenable number.

12437522761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12437522761 is an equidigital number, since it uses as much as digits as its factorization.

12437522761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The spelling of 12437522761 in words is "twelve billion, four hundred thirty-seven million, five hundred twenty-two thousand, seven hundred sixty-one".