666932763187 has 8 divisors (see below), whose sum is σ = 711244422000. Its totient is φ = 623185584384.

The previous prime is 666932763169. The next prime is 666932763241. The reversal of 666932763187 is 781367239666.

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

It is not a de Polignac number, because 666932763187 - 2²⁷ = 666798545459 is a prime.

It is a super-2 number, since 2×666932763187² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666932763487) 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, 141117562 + ... + 141122287.

It is an arithmetic number, because the mean of its divisors is an integer number (88905552750).

Almost surely, 2^666932763187 is an apocalyptic number.

666932763187 is a deficient number, since it is larger than the sum of its proper divisors (44311658813).

666932763187 is a wasteful number, since it uses less digits than its factorization.

666932763187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282240005.

The product of its digits is 82301184, while the sum is 64.

The spelling of 666932763187 in words is "six hundred sixty-six billion, nine hundred thirty-two million, seven hundred sixty-three thousand, one hundred eighty-seven".