66167056765117 has 48 divisors (see below), whose sum is σ = 85989929719680. Its totient is φ = 49778072023680.

The previous prime is 66167056765081. The next prime is 66167056765127. The reversal of 66167056765117 is 71156765076166.

It is not a de Polignac number, because 66167056765117 - 2⁷ = 66167056764989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66167056765127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 508806658 + ... + 508936684.

It is an arithmetic number, because the mean of its divisors is an integer number (1791456869160).

Almost surely, 2^{66167056765117} is an apocalyptic number.

It is an amenable number.

66167056765117 is a deficient number, since it is larger than the sum of its proper divisors (19822872954563).

66167056765117 is a wasteful number, since it uses less digits than its factorization.

66167056765117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150802 (or 150791 counting only the distinct ones).

The product of its (nonzero) digits is 66679200, while the sum is 64.

The spelling of 66167056765117 in words is "sixty-six trillion, one hundred sixty-seven billion, fifty-six million, seven hundred sixty-five thousand, one hundred seventeen".