66647014755 has 16 divisors (see below), whose sum is σ = 106639247520. Its totient is φ = 35543733248.

The previous prime is 66647014747. The next prime is 66647014757. The reversal of 66647014755 is 55741074666.

It is a cyclic number.

It is not a de Polignac number, because 66647014755 - 2³ = 66647014747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66647014698 and 66647014707.

It is not an unprimeable number, because it can be changed into a prime (66647014757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427561 + ... + 562229.

It is an arithmetic number, because the mean of its divisors is an integer number (6664952970).

Almost surely, 2^66647014755 is an apocalyptic number.

66647014755 is a deficient number, since it is larger than the sum of its proper divisors (39992232765).

66647014755 is a wasteful number, since it uses less digits than its factorization.

66647014755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167670.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 66647014755 in words is "sixty-six billion, six hundred forty-seven million, fourteen thousand, seven hundred fifty-five".