66747073746 has 16 divisors (see below), whose sum is σ = 133511210784. Its totient is φ = 22246180704.

The previous prime is 66747073733. The next prime is 66747073843. The reversal of 66747073746 is 64737074766.

It is an unprimeable number.

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, 659835 + ... + 754238.

It is an arithmetic number, because the mean of its divisors is an integer number (8344450674).

Almost surely, 2^66747073746 is an apocalyptic number.

66747073746 is an abundant number, since it is smaller than the sum of its proper divisors (66764137038).

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

66747073746 is a wasteful number, since it uses less digits than its factorization.

66747073746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421945.

The product of its (nonzero) digits is 24893568, while the sum is 57.

The spelling of 66747073746 in words is "sixty-six billion, seven hundred forty-seven million, seventy-three thousand, seven hundred forty-six".