66914070912 has 288 divisors, whose sum is σ = 213378885720. Its totient is φ = 20107616256.

The previous prime is 66914070887. The next prime is 66914070919. The reversal of 66914070912 is 21907041966.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66914070919) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8367588 + ... + 8375580.

Almost surely, 2^66914070912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66914070912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106689442860).

66914070912 is an abundant number, since it is smaller than the sum of its proper divisors (146464814808).

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

66914070912 is a wasteful number, since it uses less digits than its factorization.

66914070912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082 (or 8054 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 66914070912 in words is "sixty-six billion, nine hundred fourteen million, seventy thousand, nine hundred twelve".