168970783811 has 2 divisors, whose sum is σ = 168970783812. Its totient is φ = 168970783810.

The previous prime is 168970783727. The next prime is 168970783843. The reversal of 168970783811 is 118387079861.

168970783811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168970783811 - 2²² = 168966589507 is a prime.

It is a super-2 number, since 2×168970783811² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (168970783511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84485391905 + 84485391906.

It is an arithmetic number, because the mean of its divisors is an integer number (84485391906).

Almost surely, 2^168970783811 is an apocalyptic number.

168970783811 is a deficient number, since it is larger than the sum of its proper divisors (1).

168970783811 is an equidigital number, since it uses as much as digits as its factorization.

168970783811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 59.

The spelling of 168970783811 in words is "one hundred sixty-eight billion, nine hundred seventy million, seven hundred eighty-three thousand, eight hundred eleven".