66283780297 has 8 divisors (see below), whose sum is σ = 75770914752. Its totient is φ = 56801151600.

The previous prime is 66283780271. The next prime is 66283780349. The reversal of 66283780297 is 79208738266.

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 66283780297 - 2⁷ = 66283780169 is a prime.

It is a super-4 number, since 4×66283780297⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66283780217) 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, 1094854 + ... + 1153807.

It is an arithmetic number, because the mean of its divisors is an integer number (9471364344).

Almost surely, 2^66283780297 is an apocalyptic number.

It is an amenable number.

66283780297 is a deficient number, since it is larger than the sum of its proper divisors (9487134455).

66283780297 is a wasteful number, since it uses less digits than its factorization.

66283780297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252879.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 66283780297 in words is "sixty-six billion, two hundred eighty-three million, seven hundred eighty thousand, two hundred ninety-seven".