667384717446 has 16 divisors (see below), whose sum is σ = 1483077150000. Its totient is φ = 222461572464.

The previous prime is 667384717423. The next prime is 667384717487. The reversal of 667384717446 is 644717483766.

667384717446 is a `hidden beast` number, since 6 + 67 + 38 + 471 + 74 + 4 + 6 = 666.

It is a super-2 number, since 2×667384717446² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6179488071 + ... + 6179488178.

It is an arithmetic number, because the mean of its divisors is an integer number (92692321875).

Almost surely, 2^667384717446 is an apocalyptic number.

667384717446 is an abundant number, since it is smaller than the sum of its proper divisors (815692432554).

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

667384717446 is a wasteful number, since it uses less digits than its factorization.

667384717446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358976260 (or 12358976254 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 667384717446 in words is "six hundred sixty-seven billion, three hundred eighty-four million, seven hundred seventeen thousand, four hundred forty-six".