635136357455252 has 6 divisors (see below), whose sum is σ = 1111488625546698. Its totient is φ = 317568178727624.

The previous prime is 635136357455239. The next prime is 635136357455321. The reversal of 635136357455252 is 252554753631536.

It can be written as a sum of positive squares in only one way, i.e., 448006159816336 + 187130197638916 = 21166156^2 + 13679554^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 79392044681903 + ... + 79392044681910.

It is an arithmetic number, because the mean of its divisors is an integer number (185248104257783).

Almost surely, 2^{635136357455252} is an apocalyptic number.

It is an amenable number.

635136357455252 is a deficient number, since it is larger than the sum of its proper divisors (476352268091446).

635136357455252 is a wasteful number, since it uses less digits than its factorization.

635136357455252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158784089363817 (or 158784089363815 counting only the distinct ones).

The product of its digits is 340200000, while the sum is 62.

The spelling of 635136357455252 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 fifty-two".