667463878424 has 16 divisors (see below), whose sum is σ = 1430279739600. Its totient is φ = 286055947872.

The previous prime is 667463878321. The next prime is 667463878429. The reversal of 667463878424 is 424878364766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667463878429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5959498859 + ... + 5959498970.

It is an arithmetic number, because the mean of its divisors is an integer number (89392483725).

Almost surely, 2^667463878424 is an apocalyptic number.

It is an amenable number.

667463878424 is an abundant number, since it is smaller than the sum of its proper divisors (762815861176).

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

667463878424 is a wasteful number, since it uses less digits than its factorization.

667463878424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11918997842 (or 11918997838 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 65.

The spelling of 667463878424 in words is "six hundred sixty-seven billion, four hundred sixty-three million, eight hundred seventy-eight thousand, four hundred twenty-four".