667541531471 has 8 divisors (see below), whose sum is σ = 700286407200. Its totient is φ = 635445069280.

The previous prime is 667541531401. The next prime is 667541531477. The reversal of 667541531471 is 174135145766.

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

It is a cyclic number.

It is not a de Polignac number, because 667541531471 - 2²⁶ = 667474422607 is a prime.

It is a super-3 number, since 3×667541531471³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667541531477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162101276 + ... + 162105393.

It is an arithmetic number, because the mean of its divisors is an integer number (87535800900).

Almost surely, 2^667541531471 is an apocalyptic number.

667541531471 is a deficient number, since it is larger than the sum of its proper divisors (32744875729).

667541531471 is a wasteful number, since it uses less digits than its factorization.

667541531471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324206769.

The product of its digits is 2116800, while the sum is 50.

The spelling of 667541531471 in words is "six hundred sixty-seven billion, five hundred forty-one million, five hundred thirty-one thousand, four hundred seventy-one".