70896906989 has 2 divisors, whose sum is σ = 70896906990. Its totient is φ = 70896906988.

The previous prime is 70896906967. The next prime is 70896907001. The reversal of 70896906989 is 98960969807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46620150889 + 24276756100 = 215917^2 + 155810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70896906989 is a prime.

It is a super-2 number, since 2×70896906989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70896906389) 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, 35448453494 + 35448453495.

It is an arithmetic number, because the mean of its divisors is an integer number (35448453495).

Almost surely, 2^70896906989 is an apocalyptic number.

It is an amenable number.

70896906989 is a deficient number, since it is larger than the sum of its proper divisors (1).

70896906989 is an equidigital number, since it uses as much as digits as its factorization.

70896906989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105815808, while the sum is 71.

The spelling of 70896906989 in words is "seventy billion, eight hundred ninety-six million, nine hundred six thousand, nine hundred eighty-nine".