126165737513 has 2 divisors, whose sum is σ = 126165737514. Its totient is φ = 126165737512.

The previous prime is 126165737501. The next prime is 126165737521. The reversal of 126165737513 is 315737561621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126161356864 + 4380649 = 355192^2 + 2093^2 .

It is a cyclic number.

It is not a de Polignac number, because 126165737513 - 2¹⁸ = 126165475369 is a prime.

It is not a weakly prime, because it can be changed into another prime (126165737543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63082868756 + 63082868757.

It is an arithmetic number, because the mean of its divisors is an integer number (63082868757).

Almost surely, 2^126165737513 is an apocalyptic number.

It is an amenable number.

126165737513 is a deficient number, since it is larger than the sum of its proper divisors (1).

126165737513 is an equidigital number, since it uses as much as digits as its factorization.

126165737513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 47.

The spelling of 126165737513 in words is "one hundred twenty-six billion, one hundred sixty-five million, seven hundred thirty-seven thousand, five hundred thirteen".