66859250746 has 16 divisors (see below), whose sum is σ = 105631047360. Its totient is φ = 31651028640.

The previous prime is 66859250743. The next prime is 66859250761. The reversal of 66859250746 is 64705295866.

It is not an unprimeable number, because it can be changed into a prime (66859250743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467950 + ... + 593881.

It is an arithmetic number, because the mean of its divisors is an integer number (6601940460).

Almost surely, 2^66859250746 is an apocalyptic number.

66859250746 is a deficient number, since it is larger than the sum of its proper divisors (38771796614).

66859250746 is a wasteful number, since it uses less digits than its factorization.

66859250746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063509.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 66859250746 in words is "sixty-six billion, eight hundred fifty-nine million, two hundred fifty thousand, seven hundred forty-six".