636575680050 has 48 divisors (see below), whose sum is σ = 1585662430752. Its totient is φ = 169005692800.

The previous prime is 636575680049. The next prime is 636575680057. The reversal of 636575680050 is 50086575636.

It is a super-2 number, since 2×636575680050² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 636575679975 and 636575680002.

It is not an unprimeable number, because it can be changed into a prime (636575680057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9313611 + ... + 9381710.

It is an arithmetic number, because the mean of its divisors is an integer number (33034633974).

Almost surely, 2^636575680050 is an apocalyptic number.

636575680050 is an abundant number, since it is smaller than the sum of its proper divisors (949086750702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636575680050 is a wasteful number, since it uses less digits than its factorization.

636575680050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18695563 (or 18695558 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 636575680050 in words is "six hundred thirty-six billion, five hundred seventy-five million, six hundred eighty thousand, fifty".