66783992037 has 48 divisors (see below), whose sum is σ = 105209323200. Its totient is φ = 37567031040.

The previous prime is 66783992029. The next prime is 66783992039. The reversal of 66783992037 is 73029938766.

It is not a de Polignac number, because 66783992037 - 2³ = 66783992029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66783992039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2984862 + ... + 3007152.

It is an arithmetic number, because the mean of its divisors is an integer number (2191860900).

Almost surely, 2^66783992037 is an apocalyptic number.

It is an amenable number.

66783992037 is a deficient number, since it is larger than the sum of its proper divisors (38425331163).

66783992037 is a wasteful number, since it uses less digits than its factorization.

66783992037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22626 (or 22619 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 66783992037 in words is "sixty-six billion, seven hundred eighty-three million, nine hundred ninety-two thousand, thirty-seven".