667231046145 has 12 divisors (see below), whose sum is σ = 1156533813396. Its totient is φ = 355856557920.

The previous prime is 667231046143. The next prime is 667231046231. The reversal of 667231046145 is 541640132766.

667231046145 is a `hidden beast` number, since 6 + 6 + 7 + 23 + 1 + 0 + 4 + 614 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 527372249616 + 139858796529 = 726204^2 + 373977^2 .

It is not a de Polignac number, because 667231046145 - 2¹ = 667231046143 is a prime.

It is a super-2 number, since 2×667231046145² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 14827356581 = 667231046145 / (6 + 6 + 7 + 2 + 3 + 1 + 0 + 4 + 6 + 1 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 667231046145.

It is not an unprimeable number, because it can be changed into a prime (667231046143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7413678246 + ... + 7413678335.

It is an arithmetic number, because the mean of its divisors is an integer number (96377817783).

Almost surely, 2^667231046145 is an apocalyptic number.

It is an amenable number.

667231046145 is a deficient number, since it is larger than the sum of its proper divisors (489302767251).

667231046145 is a wasteful number, since it uses less digits than its factorization.

667231046145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14827356592 (or 14827356589 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 667231046145 in words is "six hundred sixty-seven billion, two hundred thirty-one million, forty-six thousand, one hundred forty-five".