11643163169538 has 8 divisors (see below), whose sum is σ = 23286326339088. Its totient is φ = 3881054389844.

The previous prime is 11643163169501. The next prime is 11643163169557. The reversal of 11643163169538 is 83596136134611.

It is a sphenic number, since it is the product of 3 distinct primes.

11643163169538 is an admirable number.

It is a super-2 number, since 2×11643163169538² (a number of 27 digits) contains 22 as substring.

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, 970263597456 + ... + 970263597467.

It is an arithmetic number, because the mean of its divisors is an integer number (2910790792386).

Almost surely, 2^{11643163169538} is an apocalyptic number.

11643163169538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11643163169538 is a wasteful number, since it uses less digits than its factorization.

11643163169538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940527194928.

The product of its digits is 8398080, while the sum is 57.

The spelling of 11643163169538 in words is "eleven trillion, six hundred forty-three billion, one hundred sixty-three million, one hundred sixty-nine thousand, five hundred thirty-eight".