66907142592 has 112 divisors (see below), whose sum is σ = 183371398560. Its totient is φ = 21504888832.

The previous prime is 66907142543. The next prime is 66907142593. The reversal of 66907142592 is 29524170966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66907142593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4430158 + ... + 4445234.

It is an arithmetic number, because the mean of its divisors is an integer number (1637244630).

Almost surely, 2^66907142592 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 66907142592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91685699280).

66907142592 is an abundant number, since it is smaller than the sum of its proper divisors (116464255968).

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

66907142592 is a wasteful number, since it uses less digits than its factorization.

66907142592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15918 (or 15908 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 66907142592 in words is "sixty-six billion, nine hundred seven million, one hundred forty-two thousand, five hundred ninety-two".