66866095296 has 1792 divisors, whose sum is σ = 288394444800. Its totient is φ = 14631321600.

The previous prime is 66866095277. The next prime is 66866095297. The reversal of 66866095296 is 69259066866.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (66866095297) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1555025451 + ... + 1555025493.

It is an arithmetic number, because the mean of its divisors is an integer number (160934400).

Almost surely, 2^66866095296 is an apocalyptic number.

66866095296 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66866095296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144197222400).

66866095296 is an abundant number, since it is smaller than the sum of its proper divisors (221528349504).

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

66866095296 is a wasteful number, since it uses less digits than its factorization.

66866095296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 66866095296 in words is "sixty-six billion, eight hundred sixty-six million, ninety-five thousand, two hundred ninety-six".