705871178149 has 2 divisors, whose sum is σ = 705871178150. Its totient is φ = 705871178148.

The previous prime is 705871178069. The next prime is 705871178167. The reversal of 705871178149 is 941871178507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661399960225 + 44471217924 = 813265^2 + 210882^2 .

It is a cyclic number.

It is not a de Polignac number, because 705871178149 - 2²⁷ = 705736960421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 705871178093 and 705871178102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705871170149) 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, 352935589074 + 352935589075.

It is an arithmetic number, because the mean of its divisors is an integer number (352935589075).

Almost surely, 2^705871178149 is an apocalyptic number.

It is an amenable number.

705871178149 is a deficient number, since it is larger than the sum of its proper divisors (1).

705871178149 is an equidigital number, since it uses as much as digits as its factorization.

705871178149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3951360, while the sum is 58.

The spelling of 705871178149 in words is "seven hundred five billion, eight hundred seventy-one million, one hundred seventy-eight thousand, one hundred forty-nine".