11643994091512 has 16 divisors (see below), whose sum is σ = 21839067003600. Its totient is φ = 5820242890560.

The previous prime is 11643994091467. The next prime is 11643994091537. The reversal of 11643994091512 is 21519049934611.

11643994091512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11643994091512² (a number of 27 digits) contains 22 as substring.

It is a congruent 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, 219241189 + ... + 219294292.

It is an arithmetic number, because the mean of its divisors is an integer number (1364941687725).

Almost surely, 2^{11643994091512} is an apocalyptic number.

It is an amenable number.

11643994091512 is a deficient number, since it is larger than the sum of its proper divisors (10195072912088).

11643994091512 is a wasteful number, since it uses less digits than its factorization.

11643994091512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438538806 (or 438538802 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 11643994091512 in words is "eleven trillion, six hundred forty-three billion, nine hundred ninety-four million, ninety-one thousand, five hundred twelve".