66973311337966 has 8 divisors (see below), whose sum is σ = 109592691280344. Its totient is φ = 30442414244520.

The previous prime is 66973311337943. The next prime is 66973311338009.

66973311337966 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×66973311337966³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66973311337895 and 66973311337904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522120712205 + ... + 1522120712248.

It is an arithmetic number, because the mean of its divisors is an integer number (13699086410043).

Almost surely, 2^{66973311337966} is an apocalyptic number.

66973311337966 is a deficient number, since it is larger than the sum of its proper divisors (42619379942378).

66973311337966 is a wasteful number, since it uses less digits than its factorization.

66973311337966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044241424466.

The product of its digits is 416649744, while the sum is 70.

The spelling of 66973311337966 in words is "sixty-six trillion, nine hundred seventy-three billion, three hundred eleven million, three hundred thirty-seven thousand, nine hundred sixty-six".