667572444131 has 8 divisors (see below), whose sum is σ = 680000812560. Its totient is φ = 655253577088.

The previous prime is 667572444047. The next prime is 667572444173. The reversal of 667572444131 is 131444275766.

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 667572444131 - 2²⁶ = 667505335267 is a prime.

It is a super-2 number, since 2×667572444131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667572444131.

It is not an unprimeable number, because it can be changed into a prime (667572441131) 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, 27363041 + ... + 27387426.

It is an arithmetic number, because the mean of its divisors is an integer number (85000101570).

Almost surely, 2^667572444131 is an apocalyptic number.

667572444131 is a deficient number, since it is larger than the sum of its proper divisors (12428368429).

667572444131 is a wasteful number, since it uses less digits than its factorization.

667572444131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54750693.

The product of its digits is 3386880, while the sum is 50.

The spelling of 667572444131 in words is "six hundred sixty-seven billion, five hundred seventy-two million, four hundred forty-four thousand, one hundred thirty-one".