70707227681 has 2 divisors, whose sum is σ = 70707227682. Its totient is φ = 70707227680.

The previous prime is 70707227659. The next prime is 70707227683. The reversal of 70707227681 is 18672270707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65482251025 + 5224976656 = 255895^2 + 72284^2 .

It is an emirp because it is prime and its reverse (18672270707) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70707227681 is a prime.

It is a super-2 number, since 2×70707227681² (a number of 22 digits) contains 22 as substring.

Together with 70707227683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70707227683) 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, 35353613840 + 35353613841.

It is an arithmetic number, because the mean of its divisors is an integer number (35353613841).

Almost surely, 2^70707227681 is an apocalyptic number.

It is an amenable number.

70707227681 is a deficient number, since it is larger than the sum of its proper divisors (1).

70707227681 is an equidigital number, since it uses as much as digits as its factorization.

70707227681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 70707227681 in words is "seventy billion, seven hundred seven million, two hundred twenty-seven thousand, six hundred eighty-one".