66377620267 has 8 divisors (see below), whose sum is σ = 78307238912. Its totient is φ = 55059777000.

The previous prime is 66377620223. The next prime is 66377620279. The reversal of 66377620267 is 76202677366.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66377620267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66377620667) 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, 152943609 + ... + 152944042.

It is an arithmetic number, because the mean of its divisors is an integer number (9788404864).

Almost surely, 2^66377620267 is an apocalyptic number.

66377620267 is a deficient number, since it is larger than the sum of its proper divisors (11929618645).

66377620267 is a wasteful number, since it uses less digits than its factorization.

66377620267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305887689.

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 66377620267 in words is "sixty-six billion, three hundred seventy-seven million, six hundred twenty thousand, two hundred sixty-seven".