11891911602 has 8 divisors (see below), whose sum is σ = 23783823216. Its totient is φ = 3963970532.

The previous prime is 11891911601. The next prime is 11891911609. The reversal of 11891911602 is 20611919811.

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

11891911602 is an admirable number.

It is a super-4 number, since 4×11891911602⁴ (a number of 41 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (11891911601) 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, 990992628 + ... + 990992639.

It is an arithmetic number, because the mean of its divisors is an integer number (2972977902).

Almost surely, 2^11891911602 is an apocalyptic number.

11891911602 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.

11891911602 is a wasteful number, since it uses less digits than its factorization.

11891911602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981985272.

The product of its (nonzero) digits is 7776, while the sum is 39.

The spelling of 11891911602 in words is "eleven billion, eight hundred ninety-one million, nine hundred eleven thousand, six hundred two".