635542220511652 has 48 divisors (see below), whose sum is σ = 1129506930720000. Its totient is φ = 312831963490464.

The previous prime is 635542220511589. The next prime is 635542220511661. The reversal of 635542220511652 is 256115022245536.

It is a junction number, because it is equal to n+sod(n) for n = 635542220511596 and 635542220511605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2943593599 + ... + 2943809497.

It is an arithmetic number, because the mean of its divisors is an integer number (23531394390000).

Almost surely, 2^{635542220511652} is an apocalyptic number.

It is an amenable number.

635542220511652 is a deficient number, since it is larger than the sum of its proper divisors (493964710208348).

635542220511652 is a wasteful number, since it uses less digits than its factorization.

635542220511652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222808 (or 222806 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 49.

The spelling of 635542220511652 in words is "six hundred thirty-five trillion, five hundred forty-two billion, two hundred twenty million, five hundred eleven thousand, six hundred fifty-two".