635775047513 has 2 divisors, whose sum is σ = 635775047514. Its totient is φ = 635775047512.

The previous prime is 635775047483. The next prime is 635775047563. The reversal of 635775047513 is 315740577536.

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., 552445833289 + 83329214224 = 743267^2 + 288668^2 .

It is a cyclic number.

It is not a de Polignac number, because 635775047513 - 2²⁴ = 635758270297 is a prime.

It is a super-2 number, since 2×635775047513² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (635775047563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317887523756 + 317887523757.

It is an arithmetic number, because the mean of its divisors is an integer number (317887523757).

Almost surely, 2^635775047513 is an apocalyptic number.

It is an amenable number.

635775047513 is a deficient number, since it is larger than the sum of its proper divisors (1).

635775047513 is an equidigital number, since it uses as much as digits as its factorization.

635775047513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9261000, while the sum is 53.

The spelling of 635775047513 in words is "six hundred thirty-five billion, seven hundred seventy-five million, forty-seven thousand, five hundred thirteen".