166028802047 has 2 divisors, whose sum is σ = 166028802048. Its totient is φ = 166028802046.

The previous prime is 166028802011. The next prime is 166028802061. The reversal of 166028802047 is 740208820661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166028802047 - 2²⁴ = 166012024831 is a prime.

It is a super-2 number, since 2×166028802047² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166028801989 and 166028802007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166028892047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83014401023 + 83014401024.

It is an arithmetic number, because the mean of its divisors is an integer number (83014401024).

Almost surely, 2^166028802047 is an apocalyptic number.

166028802047 is a deficient number, since it is larger than the sum of its proper divisors (1).

166028802047 is an equidigital number, since it uses as much as digits as its factorization.

166028802047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 166028802047 in words is "one hundred sixty-six billion, twenty-eight million, eight hundred two thousand, forty-seven".