667443468432 has 80 divisors (see below), whose sum is σ = 1966089162240. Its totient is φ = 193286793216.

The previous prime is 667443468397. The next prime is 667443468511. The reversal of 667443468432 is 234864344766.

It is a super-3 number, since 3×667443468432³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31448832 + ... + 31470047.

It is an arithmetic number, because the mean of its divisors is an integer number (24576114528).

Almost surely, 2^667443468432 is an apocalyptic number.

It is an amenable number.

667443468432 is an abundant number, since it is smaller than the sum of its proper divisors (1298645693808).

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

667443468432 is a wasteful number, since it uses less digits than its factorization.

667443468432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62918920 (or 62918914 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 57.

The spelling of 667443468432 in words is "six hundred sixty-seven billion, four hundred forty-three million, four hundred sixty-eight thousand, four hundred thirty-two".