635240415650993 has 2 divisors, whose sum is σ = 635240415650994. Its totient is φ = 635240415650992.

The previous prime is 635240415650963. The next prime is 635240415651053. The reversal of 635240415650993 is 399056514042536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450582429863329 + 184657985787664 = 21226927^2 + 13588892^2 .

It is a cyclic number.

It is not a de Polignac number, because 635240415650993 - 2¹⁴ = 635240415634609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (635240415650963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317620207825496 + 317620207825497.

It is an arithmetic number, because the mean of its divisors is an integer number (317620207825497).

Almost surely, 2^{635240415650993} is an apocalyptic number.

It is an amenable number.

635240415650993 is a deficient number, since it is larger than the sum of its proper divisors (1).

635240415650993 is an equidigital number, since it uses as much as digits as its factorization.

635240415650993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976000, while the sum is 62.

The spelling of 635240415650993 in words is "six hundred thirty-five trillion, two hundred forty billion, four hundred fifteen million, six hundred fifty thousand, nine hundred ninety-three".