63845270513 has 2 divisors, whose sum is σ = 63845270514. Its totient is φ = 63845270512.

The previous prime is 63845270507. The next prime is 63845270579. The reversal of 63845270513 is 31507254836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44815619809 + 19029650704 = 211697^2 + 137948^2 .

It is a cyclic number.

It is not a de Polignac number, because 63845270513 - 2⁶ = 63845270449 is a prime.

It is not a weakly prime, because it can be changed into another prime (63845278513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31922635256 + 31922635257.

It is an arithmetic number, because the mean of its divisors is an integer number (31922635257).

Almost surely, 2^63845270513 is an apocalyptic number.

It is an amenable number.

63845270513 is a deficient number, since it is larger than the sum of its proper divisors (1).

63845270513 is an equidigital number, since it uses as much as digits as its factorization.

63845270513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 63845270513 in words is "sixty-three billion, eight hundred forty-five million, two hundred seventy thousand, five hundred thirteen".