66117354627 has 12 divisors (see below), whose sum is σ = 88235103320. Its totient is φ = 44038939200.

The previous prime is 66117354607. The next prime is 66117354659. The reversal of 66117354627 is 72645371166.

It is a happy number.

66117354627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66117354627 - 2³⁵ = 31757616259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66117354607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17862877 + ... + 17866577.

Almost surely, 2^66117354627 is an apocalyptic number.

66117354627 is a deficient number, since it is larger than the sum of its proper divisors (22117748693).

66117354627 is an frugal number, since it uses more digits than its factorization.

66117354627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9014 (or 5313 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The spelling of 66117354627 in words is "sixty-six billion, one hundred seventeen million, three hundred fifty-four thousand, six hundred twenty-seven".