63837501361 has 2 divisors, whose sum is σ = 63837501362. Its totient is φ = 63837501360.

The previous prime is 63837501313. The next prime is 63837501407. The reversal of 63837501361 is 16310573836.

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., 39674664225 + 24162837136 = 199185^2 + 155444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63837501361 is a prime.

It is not a weakly prime, because it can be changed into another prime (63837501461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31918750680 + 31918750681.

It is an arithmetic number, because the mean of its divisors is an integer number (31918750681).

Almost surely, 2^63837501361 is an apocalyptic number.

It is an amenable number.

63837501361 is a deficient number, since it is larger than the sum of its proper divisors (1).

63837501361 is an equidigital number, since it uses as much as digits as its factorization.

63837501361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 63837501361 in words is "sixty-three billion, eight hundred thirty-seven million, five hundred one thousand, three hundred sixty-one".