667479423424 has 112 divisors (see below), whose sum is σ = 1492149814272. Its totient is φ = 293495040000.

The previous prime is 667479423421. The next prime is 667479423439. The reversal of 667479423424 is 424324974766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667479423421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76183204 + ... + 76191964.

Almost surely, 2^667479423424 is an apocalyptic number.

667479423424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667479423424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746074907136).

667479423424 is an abundant number, since it is smaller than the sum of its proper divisors (824670390848).

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

667479423424 is a wasteful number, since it uses less digits than its factorization.

667479423424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12306 (or 12296 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 58.

The spelling of 667479423424 in words is "six hundred sixty-seven billion, four hundred seventy-nine million, four hundred twenty-three thousand, four hundred twenty-four".