66654746004 has 192 divisors, whose sum is σ = 206065520640. Its totient is φ = 16234629120.

The previous prime is 66654746003. The next prime is 66654746029. The reversal of 66654746004 is 40064745666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66654746003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4343457 + ... + 4358775.

It is an arithmetic number, because the mean of its divisors is an integer number (1073257920).

Almost surely, 2^66654746004 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 66654746004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103032760320).

66654746004 is an abundant number, since it is smaller than the sum of its proper divisors (139410774636).

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

66654746004 is a wasteful number, since it uses less digits than its factorization.

66654746004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15638 (or 15636 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 66654746004 in words is "sixty-six billion, six hundred fifty-four million, seven hundred forty-six thousand, four".