63336621237121 has 2 divisors, whose sum is σ = 63336621237122. Its totient is φ = 63336621237120.

The previous prime is 63336621237049. The next prime is 63336621237139. The reversal of 63336621237121 is 12173212663336.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42070790440000 + 21265830797121 = 6486200^2 + 4611489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63336621237121 is a prime.

It is not a weakly prime, because it can be changed into another prime (63336621247121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31668310618560 + 31668310618561.

It is an arithmetic number, because the mean of its divisors is an integer number (31668310618561).

Almost surely, 2^{63336621237121} is an apocalyptic number.

It is an amenable number.

63336621237121 is a deficient number, since it is larger than the sum of its proper divisors (1).

63336621237121 is an equidigital number, since it uses as much as digits as its factorization.

63336621237121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 46.

The spelling of 63336621237121 in words is "sixty-three trillion, three hundred thirty-six billion, six hundred twenty-one million, two hundred thirty-seven thousand, one hundred twenty-one".