667500317642 has 8 divisors (see below), whose sum is σ = 1001479976256. Its totient is φ = 333673658892.

The previous prime is 667500317633. The next prime is 667500317669. The reversal of 667500317642 is 246713005766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38239058 + ... + 38256509.

It is an arithmetic number, because the mean of its divisors is an integer number (125184997032).

Almost surely, 2^667500317642 is an apocalyptic number.

667500317642 is a deficient number, since it is larger than the sum of its proper divisors (333979658614).

667500317642 is a wasteful number, since it uses less digits than its factorization.

667500317642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76499932.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 667500317642 in words is "six hundred sixty-seven billion, five hundred million, three hundred seventeen thousand, six hundred forty-two".