66911018112 has 96 divisors (see below), whose sum is σ = 199674755280. Its totient is φ = 22303662336.

The previous prime is 66911018033. The next prime is 66911018117. The reversal of 66911018112 is 21181011966.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (66911018117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1044498 + ... + 1106705.

Almost surely, 2^66911018112 is an apocalyptic number.

It is an amenable number.

66911018112 is an abundant number, since it is smaller than the sum of its proper divisors (132763737168).

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

66911018112 is an equidigital number, since it uses as much as digits as its factorization.

66911018112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151232 (or 2151208 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 66911018112 in words is "sixty-six billion, nine hundred eleven million, eighteen thousand, one hundred twelve".