66746747474 has 8 divisors (see below), whose sum is σ = 109221950448. Its totient is φ = 30339430660.

The previous prime is 66746747447. The next prime is 66746747479. The reversal of 66746747474 is 47474764766.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (66746747479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516971512 + ... + 1516971555.

It is an arithmetic number, because the mean of its divisors is an integer number (13652743806).

Almost surely, 2^66746747474 is an apocalyptic number.

66746747474 is a deficient number, since it is larger than the sum of its proper divisors (42475202974).

66746747474 is a wasteful number, since it uses less digits than its factorization.

66746747474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033943080.

The product of its digits is 132765696, while the sum is 62.

The spelling of 66746747474 in words is "sixty-six billion, seven hundred forty-six million, seven hundred forty-seven thousand, four hundred seventy-four".