166071470723 has 2 divisors, whose sum is σ = 166071470724. Its totient is φ = 166071470722.

The previous prime is 166071470713. The next prime is 166071470749. The reversal of 166071470723 is 327074170661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166071470723 is a prime.

It is a super-2 number, since 2×166071470723² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (166071470713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83035735361 + 83035735362.

It is an arithmetic number, because the mean of its divisors is an integer number (83035735362).

Almost surely, 2^166071470723 is an apocalyptic number.

166071470723 is a deficient number, since it is larger than the sum of its proper divisors (1).

166071470723 is an equidigital number, since it uses as much as digits as its factorization.

166071470723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 166071470723 in words is "one hundred sixty-six billion, seventy-one million, four hundred seventy thousand, seven hundred twenty-three".