11815636063 has 32 divisors (see below), whose sum is σ = 15041521152. Its totient is φ = 9015014400.

The previous prime is 11815636033. The next prime is 11815636097. The reversal of 11815636063 is 36063651811.

It is not a de Polignac number, because 11815636063 - 2⁵ = 11815636031 is a prime.

It is a super-2 number, since 2×11815636063² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11815636013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 714003 + ... + 730363.

It is an arithmetic number, because the mean of its divisors is an integer number (470047536).

Almost surely, 2^11815636063 is an apocalyptic number.

11815636063 is a deficient number, since it is larger than the sum of its proper divisors (3225885089).

11815636063 is a wasteful number, since it uses less digits than its factorization.

11815636063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16575.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 11815636063 in words is "eleven billion, eight hundred fifteen million, six hundred thirty-six thousand, sixty-three".