66714894344 has 48 divisors (see below), whose sum is σ = 145658432700. Its totient is φ = 28563591168.

The previous prime is 66714894343. The next prime is 66714894397. The reversal of 66714894344 is 44349841766.

It can be written as a sum of positive squares in 2 ways, for example, as 64602388900 + 2112505444 = 254170^2 + 45962^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 66714894344.

It is not an unprimeable number, because it can be changed into a prime (66714894341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311192 + ... + 479864.

Almost surely, 2^66714894344 is an apocalyptic number.

It is an amenable number.

66714894344 is an abundant number, since it is smaller than the sum of its proper divisors (78943538356).

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

66714894344 is a wasteful number, since it uses less digits than its factorization.

66714894344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169702 (or 169691 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 56.

The spelling of 66714894344 in words is "sixty-six billion, seven hundred fourteen million, eight hundred ninety-four thousand, three hundred forty-four".