667231535466 has 12 divisors (see below), whose sum is σ = 1445668326882. Its totient is φ = 222410511816.

The previous prime is 667231535461. The next prime is 667231535483. The reversal of 667231535466 is 664535132766.

667231535466 is a `hidden beast` number, since 6 + 6 + 7 + 23 + 153 + 5 + 466 = 666.

It can be written as a sum of positive squares in only one way, i.e., 338706540225 + 328524995241 = 581985^2 + 573171^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667231535461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18534209301 + ... + 18534209336.

Almost surely, 2^667231535466 is an apocalyptic number.

667231535466 is an abundant number, since it is smaller than the sum of its proper divisors (778436791416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667231535466 is a wasteful number, since it uses less digits than its factorization.

667231535466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37068418645 (or 37068418642 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 54.

The spelling of 667231535466 in words is "six hundred sixty-seven billion, two hundred thirty-one million, five hundred thirty-five thousand, four hundred sixty-six".