11634888505 has 4 divisors (see below), whose sum is σ = 13961866212. Its totient is φ = 9307910800.

The previous prime is 11634888467. The next prime is 11634888563. The reversal of 11634888505 is 50588843611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4479758761 + 7155129744 = 66931^2 + 84588^2 .

It is not a de Polignac number, because 11634888505 - 2¹¹ = 11634886457 is a prime.

It is a super-2 number, since 2×11634888505² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163488846 + ... + 1163488855.

It is an arithmetic number, because the mean of its divisors is an integer number (3490466553).

Almost surely, 2^11634888505 is an apocalyptic number.

It is an amenable number.

11634888505 is a deficient number, since it is larger than the sum of its proper divisors (2326977707).

11634888505 is an equidigital number, since it uses as much as digits as its factorization.

11634888505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326977706.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 11634888505 in words is "eleven billion, six hundred thirty-four million, eight hundred eighty-eight thousand, five hundred five".