636060113781 has 16 divisors (see below), whose sum is σ = 854470333440. Its totient is φ = 420852224880.

The previous prime is 636060113707. The next prime is 636060113807. The reversal of 636060113781 is 187311060636.

It is not a de Polignac number, because 636060113781 - 2¹⁰ = 636060112757 is a prime.

It is a super-2 number, since 2×636060113781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636060113081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552955 + ... + 1256136.

It is an arithmetic number, because the mean of its divisors is an integer number (53404395840).

Almost surely, 2^636060113781 is an apocalyptic number.

It is an amenable number.

636060113781 is a deficient number, since it is larger than the sum of its proper divisors (218410219659).

636060113781 is a wasteful number, since it uses less digits than its factorization.

636060113781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809976.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 636060113781 in words is "six hundred thirty-six billion, sixty million, one hundred thirteen thousand, seven hundred eighty-one".