66934343456 has 12 divisors (see below), whose sum is σ = 131776988742. Its totient is φ = 33467171712.

The previous prime is 66934343447. The next prime is 66934343533. The reversal of 66934343456 is 65434343966.

It can be written as a sum of positive squares in only one way, i.e., 66092183056 + 842160400 = 257084^2 + 29020^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66934343398 and 66934343407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045849085 + ... + 1045849148.

Almost surely, 2^66934343456 is an apocalyptic number.

It is an amenable number.

66934343456 is a deficient number, since it is larger than the sum of its proper divisors (64842645286).

66934343456 is a wasteful number, since it uses less digits than its factorization.

66934343456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091698243 (or 2091698235 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 53.

The spelling of 66934343456 in words is "sixty-six billion, nine hundred thirty-four million, three hundred forty-three thousand, four hundred fifty-six".