11566041620664 has 32 divisors (see below), whose sum is σ = 29039203224720. Its totient is φ = 3838800650496.

The previous prime is 11566041620533. The next prime is 11566041620669. The reversal of 11566041620664 is 46602614066511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11566041620669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034154067 + ... + 1034165250.

Almost surely, 2^{11566041620664} is an apocalyptic number.

It is an amenable number.

11566041620664 is an abundant number, since it is smaller than the sum of its proper divisors (17473161604056).

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

11566041620664 is a wasteful number, since it uses less digits than its factorization.

11566041620664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068319559 (or 2068319555 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 11566041620664 in words is "eleven trillion, five hundred sixty-six billion, forty-one million, six hundred twenty thousand, six hundred sixty-four".