167666751073847 has 4 divisors (see below), whose sum is σ = 167666779693680. Its totient is φ = 167666722454016.

The previous prime is 167666751073817. The next prime is 167666751073897. The reversal of 167666751073847 is 748370157666761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167666751073847 is a prime.

It is a super-2 number, since 2×167666751073847² (a number of 29 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 (167666751073817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982363 + ... + 18419100.

It is an arithmetic number, because the mean of its divisors is an integer number (41916694923420).

Almost surely, 2^{167666751073847} is an apocalyptic number.

167666751073847 is a deficient number, since it is larger than the sum of its proper divisors (28619833).

167666751073847 is an equidigital number, since it uses as much as digits as its factorization.

167666751073847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28619832.

The product of its (nonzero) digits is 1493614080, while the sum is 74.

The spelling of 167666751073847 in words is "one hundred sixty-seven trillion, six hundred sixty-six billion, seven hundred fifty-one million, seventy-three thousand, eight hundred forty-seven".