66701688063192 has 384 divisors, whose sum is σ = 223217580418560. Its totient is φ = 17522189568000.

The previous prime is 66701688063163. The next prime is 66701688063277. The reversal of 66701688063192 is 29136088610766.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5564496223 + ... + 5564508209.

It is an arithmetic number, because the mean of its divisors is an integer number (581295782340).

Almost surely, 2^{66701688063192} 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 66701688063192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111608790209280).

66701688063192 is an abundant number, since it is smaller than the sum of its proper divisors (156515892355368).

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

66701688063192 is a wasteful number, since it uses less digits than its factorization.

66701688063192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15303 (or 15296 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 66701688063192 in words is "sixty-six trillion, seven hundred one billion, six hundred eighty-eight million, sixty-three thousand, one hundred ninety-two".