11638713063 has 4 divisors (see below), whose sum is σ = 15518284088. Its totient is φ = 7759142040.

The previous prime is 11638713061. The next prime is 11638713089. The reversal of 11638713063 is 36031783611.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11638713063 - 2¹ = 11638713061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11638713061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1939785508 + ... + 1939785513.

It is an arithmetic number, because the mean of its divisors is an integer number (3879571022).

Almost surely, 2^11638713063 is an apocalyptic number.

11638713063 is a deficient number, since it is larger than the sum of its proper divisors (3879571025).

11638713063 is an equidigital number, since it uses as much as digits as its factorization.

11638713063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879571024.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 11638713063 in words is "eleven billion, six hundred thirty-eight million, seven hundred thirteen thousand, sixty-three".