635979913012 has 24 divisors (see below), whose sum is σ = 1151443800360. Its totient is φ = 306997891200.

The previous prime is 635979913007. The next prime is 635979913033. The reversal of 635979913012 is 210319979536.

It can be written as a sum of positive squares in 4 ways, for example, as 27289718416 + 608690194596 = 165196^2 + 780186^2 .

It is a super-3 number, since 3×635979913012³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1123038 + ... + 1591594.

It is an arithmetic number, because the mean of its divisors is an integer number (47976825015).

Almost surely, 2^635979913012 is an apocalyptic number.

It is an amenable number.

635979913012 is a deficient number, since it is larger than the sum of its proper divisors (515463887348).

635979913012 is a wasteful number, since it uses less digits than its factorization.

635979913012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480291 (or 480289 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 55.

The spelling of 635979913012 in words is "six hundred thirty-five billion, nine hundred seventy-nine million, nine hundred thirteen thousand, twelve".