126713723533 has 2 divisors, whose sum is σ = 126713723534. Its totient is φ = 126713723532.

The previous prime is 126713723519. The next prime is 126713723561. The reversal of 126713723533 is 335327317621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94069183849 + 32644539684 = 306707^2 + 180678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126713723533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126713723533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126713723933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63356861766 + 63356861767.

It is an arithmetic number, because the mean of its divisors is an integer number (63356861767).

Almost surely, 2^126713723533 is an apocalyptic number.

It is an amenable number.

126713723533 is a deficient number, since it is larger than the sum of its proper divisors (1).

126713723533 is an equidigital number, since it uses as much as digits as its factorization.

126713723533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 43.

The spelling of 126713723533 in words is "one hundred twenty-six billion, seven hundred thirteen million, seven hundred twenty-three thousand, five hundred thirty-three".