11543666374 has 16 divisors (see below), whose sum is σ = 18078108768. Its totient is φ = 5517901312.

The previous prime is 11543666359. The next prime is 11543666377. The reversal of 11543666374 is 47366634511.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543666377) 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, 19494 + ... + 153190.

It is an arithmetic number, because the mean of its divisors is an integer number (1129881798).

Almost surely, 2^11543666374 is an apocalyptic number.

11543666374 is a deficient number, since it is larger than the sum of its proper divisors (6534442394).

11543666374 is a wasteful number, since it uses less digits than its factorization.

11543666374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135599.

The product of its digits is 1088640, while the sum is 46.

The spelling of 11543666374 in words is "eleven billion, five hundred forty-three million, six hundred sixty-six thousand, three hundred seventy-four".