66737473766 has 8 divisors (see below), whose sum is σ = 101600333400. Its totient is φ = 32870695968.

The previous prime is 66737473753. The next prime is 66737473849.

66737473766 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 66737473699 and 66737473708.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 249020291 + ... + 249020558.

It is an arithmetic number, because the mean of its divisors is an integer number (12700041675).

Almost surely, 2^66737473766 is an apocalyptic number.

66737473766 is a deficient number, since it is larger than the sum of its proper divisors (34862859634).

66737473766 is a wasteful number, since it uses less digits than its factorization.

66737473766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498040918.

The product of its digits is 112021056, while the sum is 62.

The spelling of 66737473766 in words is "sixty-six billion, seven hundred thirty-seven million, four hundred seventy-three thousand, seven hundred sixty-six".