667377215730752 has 112 divisors (see below), whose sum is σ = 1399790296070400. Its totient is φ = 314820370206720.

The previous prime is 667377215730737. The next prime is 667377215730829. The reversal of 667377215730752 is 257037512773766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747270908 + ... + 748163460.

Almost surely, 2^{667377215730752} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667377215730752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699895148035200).

667377215730752 is an abundant number, since it is smaller than the sum of its proper divisors (732413080339648).

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

667377215730752 is a wasteful number, since it uses less digits than its factorization.

667377215730752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895124 (or 895114 counting only the distinct ones).

The product of its (nonzero) digits is 544546800, while the sum is 68.

The spelling of 667377215730752 in words is "six hundred sixty-seven trillion, three hundred seventy-seven billion, two hundred fifteen million, seven hundred thirty thousand, seven hundred fifty-two".