66937737746 has 16 divisors (see below), whose sum is σ = 109839602880. Its totient is φ = 30341488080.

The previous prime is 66937737733. The next prime is 66937737749. The reversal of 66937737746 is 64773773966.

66937737746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66937737749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4229741 + ... + 4245536.

It is an arithmetic number, because the mean of its divisors is an integer number (6864975180).

Almost surely, 2^66937737746 is an apocalyptic number.

66937737746 is a deficient number, since it is larger than the sum of its proper divisors (42901865134).

66937737746 is a wasteful number, since it uses less digits than its factorization.

66937737746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8475649.

The product of its digits is 168031584, while the sum is 65.

The spelling of 66937737746 in words is "sixty-six billion, nine hundred thirty-seven million, seven hundred thirty-seven thousand, seven hundred forty-six".