667067815047 has 8 divisors (see below), whose sum is σ = 900682282240. Its totient is φ = 439082612280.

The previous prime is 667067815019. The next prime is 667067815147. The reversal of 667067815047 is 740518760766.

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

It is a de Polignac number, because none of the positive numbers 2^k-667067815047 is a prime.

It is a super-2 number, since 2×667067815047² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667067815147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407315829 + ... + 1407316302.

It is an arithmetic number, because the mean of its divisors is an integer number (112585285280).

Almost surely, 2^667067815047 is an apocalyptic number.

667067815047 is a deficient number, since it is larger than the sum of its proper divisors (233614467193).

667067815047 is a wasteful number, since it uses less digits than its factorization.

667067815047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814632213.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 667067815047 in words is "six hundred sixty-seven billion, sixty-seven million, eight hundred fifteen thousand, forty-seven".