12135663733 has 2 divisors, whose sum is σ = 12135663734. Its totient is φ = 12135663732.

The previous prime is 12135663671. The next prime is 12135663821. The reversal of 12135663733 is 33736653121.

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., 9119677009 + 3015986724 = 95497^2 + 54918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12135663733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12135663233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067831866 + 6067831867.

It is an arithmetic number, because the mean of its divisors is an integer number (6067831867).

Almost surely, 2^12135663733 is an apocalyptic number.

It is an amenable number.

12135663733 is a deficient number, since it is larger than the sum of its proper divisors (1).

12135663733 is an equidigital number, since it uses as much as digits as its factorization.

12135663733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 40.

The spelling of 12135663733 in words is "twelve billion, one hundred thirty-five million, six hundred sixty-three thousand, seven hundred thirty-three".