70171722457 has 2 divisors, whose sum is σ = 70171722458. Its totient is φ = 70171722456.

The previous prime is 70171722427. The next prime is 70171722461. The reversal of 70171722457 is 75422717107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61316159641 + 8855562816 = 247621^2 + 94104^2 .

It is a cyclic number.

It is not a de Polignac number, because 70171722457 - 2⁷ = 70171722329 is a prime.

It is not a weakly prime, because it can be changed into another prime (70171722427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35085861228 + 35085861229.

It is an arithmetic number, because the mean of its divisors is an integer number (35085861229).

Almost surely, 2^70171722457 is an apocalyptic number.

It is an amenable number.

70171722457 is a deficient number, since it is larger than the sum of its proper divisors (1).

70171722457 is an equidigital number, since it uses as much as digits as its factorization.

70171722457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192080, while the sum is 43.

The spelling of 70171722457 in words is "seventy billion, one hundred seventy-one million, seven hundred twenty-two thousand, four hundred fifty-seven".