635136357455249 has 16 divisors (see below), whose sum is σ = 686309227841664. Its totient is φ = 584297671900800.

The previous prime is 635136357455239. The next prime is 635136357455321. The reversal of 635136357455249 is 942554753631536.

It is a de Polignac number, because none of the positive numbers 2^k-635136357455249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635136357455239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64023197 + ... + 73275114.

It is an arithmetic number, because the mean of its divisors is an integer number (42894326740104).

Almost surely, 2^{635136357455249} is an apocalyptic number.

It is an amenable number.

635136357455249 is a deficient number, since it is larger than the sum of its proper divisors (51172870386415).

635136357455249 is a wasteful number, since it uses less digits than its factorization.

635136357455249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137299528.

The product of its digits is 1224720000, while the sum is 68.

The spelling of 635136357455249 in words is "six hundred thirty-five trillion, one hundred thirty-six billion, three hundred fifty-seven million, four hundred fifty-five thousand, two hundred forty-nine".