66937344373966 has 16 divisors (see below), whose sum is σ = 110853521025408. Its totient is φ = 30059486519800.

The previous prime is 66937344373957. The next prime is 66937344373987.

66937344373966 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66937344373892 and 66937344373901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18328953370 + ... + 18328957021.

It is an arithmetic number, because the mean of its divisors is an integer number (6928345064088).

Almost surely, 2^{66937344373966} is an apocalyptic number.

66937344373966 is a deficient number, since it is larger than the sum of its proper divisors (43916176651442).

66937344373966 is a wasteful number, since it uses less digits than its factorization.

66937344373966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36657910487.

The product of its digits is 6666395904, while the sum is 76.

The spelling of 66937344373966 in words is "sixty-six trillion, nine hundred thirty-seven billion, three hundred forty-four million, three hundred seventy-three thousand, nine hundred sixty-six".