11643211158 has 64 divisors (see below), whose sum is σ = 25158781440. Its totient is φ = 3578739200.

The previous prime is 11643211123. The next prime is 11643211183. The reversal of 11643211158 is 85111234611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1868488 + ... + 1874708.

It is an arithmetic number, because the mean of its divisors is an integer number (393105960).

Almost surely, 2^11643211158 is an apocalyptic number.

11643211158 is an abundant number, since it is smaller than the sum of its proper divisors (13515570282).

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

11643211158 is a wasteful number, since it uses less digits than its factorization.

11643211158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6613.

The product of its digits is 5760, while the sum is 33.

Adding to 11643211158 its reverse (85111234611), we get a palindrome (96754445769).

The spelling of 11643211158 in words is "eleven billion, six hundred forty-three million, two hundred eleven thousand, one hundred fifty-eight".