11645722884 has 12 divisors (see below), whose sum is σ = 27173353424. Its totient is φ = 3881907624.

The previous prime is 11645722843. The next prime is 11645722889. The reversal of 11645722884 is 48822754611.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×11645722884² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11645722889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485238442 + ... + 485238465.

Almost surely, 2^11645722884 is an apocalyptic number.

It is an amenable number.

11645722884 is an abundant number, since it is smaller than the sum of its proper divisors (15527630540).

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

11645722884 is a wasteful number, since it uses less digits than its factorization.

11645722884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970476914 (or 970476912 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The spelling of 11645722884 in words is "eleven billion, six hundred forty-five million, seven hundred twenty-two thousand, eight hundred eighty-four".