66732768029 has 8 divisors (see below), whose sum is σ = 66870685440. Its totient is φ = 66594963600.

The previous prime is 66732768023. The next prime is 66732768059. The reversal of 66732768029 is 92086723766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66732768029 - 2²⁴ = 66715990813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66732768023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209752 + ... + 1263710.

It is an arithmetic number, because the mean of its divisors is an integer number (8358835680).

Almost surely, 2^66732768029 is an apocalyptic number.

It is an amenable number.

66732768029 is a deficient number, since it is larger than the sum of its proper divisors (137917411).

66732768029 is a wasteful number, since it uses less digits than its factorization.

66732768029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56491.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 66732768029 in words is "sixty-six billion, seven hundred thirty-two million, seven hundred sixty-eight thousand, twenty-nine".