635935105138 has 16 divisors (see below), whose sum is σ = 995744208024. Its totient is φ = 304302130560.

The previous prime is 635935105063. The next prime is 635935105219. The reversal of 635935105138 is 831501539536.

It can be written as a sum of positive squares in 4 ways, for example, as 460996187089 + 174938918049 = 678967^2 + 418257^2 .

It is a super-2 number, since 2×635935105138² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 635935105091 and 635935105100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70435795 + ... + 70444822.

Almost surely, 2^635935105138 is an apocalyptic number.

635935105138 is a deficient number, since it is larger than the sum of its proper divisors (359809102886).

635935105138 is a wasteful number, since it uses less digits than its factorization.

635935105138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140880717.

The product of its (nonzero) digits is 1458000, while the sum is 49.

The spelling of 635935105138 in words is "six hundred thirty-five billion, nine hundred thirty-five million, one hundred five thousand, one hundred thirty-eight".