11666534000 has 80 divisors (see below), whose sum is σ = 30774253536. Its totient is φ = 4242368000.

The previous prime is 11666533933. The next prime is 11666534003. The reversal of 11666534000 is 43566611.

11666534000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11666534000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666534003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243149 + ... + 287148.

Almost surely, 2^11666534000 is an apocalyptic number.

11666534000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11666534000 is an abundant number, since it is smaller than the sum of its proper divisors (19107719536).

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

11666534000 is a wasteful number, since it uses less digits than its factorization.

11666534000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530331 (or 530315 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 11666534000 in words is "eleven billion, six hundred sixty-six million, five hundred thirty-four thousand".