667466799984 has 50 divisors (see below), whose sum is σ = 1931842570680. Its totient is φ = 222488932896.

The previous prime is 667466799977. The next prime is 667466800027. The reversal of 667466799984 is 489997664766.

667466799984 is a `hidden beast` number, since 6 + 6 + 7 + 466 + 79 + 9 + 9 + 84 = 666.

667466799984 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 257509044 + ... + 257511635.

Almost surely, 2^667466799984 is an apocalyptic number.

It is an amenable number.

667466799984 is an abundant number, since it is smaller than the sum of its proper divisors (1264375770696).

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

667466799984 is a wasteful number, since it uses less digits than its factorization.

667466799984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515020699 (or 515020684 counting only the distinct ones).

The product of its digits is 5925685248, while the sum is 81.

The spelling of 667466799984 in words is "six hundred sixty-seven billion, four hundred sixty-six million, seven hundred ninety-nine thousand, nine hundred eighty-four".