70951999889 has 2 divisors, whose sum is σ = 70951999890. Its totient is φ = 70951999888.

The previous prime is 70951999843. The next prime is 70951999927. The reversal of 70951999889 is 98899915907.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67721214289 + 3230785600 = 260233^2 + 56840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70951999889 is a prime.

It is not a weakly prime, because it can be changed into another prime (70951999589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35475999944 + 35475999945.

It is an arithmetic number, because the mean of its divisors is an integer number (35475999945).

Almost surely, 2^70951999889 is an apocalyptic number.

It is an amenable number.

70951999889 is a deficient number, since it is larger than the sum of its proper divisors (1).

70951999889 is an equidigital number, since it uses as much as digits as its factorization.

70951999889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132269760, while the sum is 74.

The spelling of 70951999889 in words is "seventy billion, nine hundred fifty-one million, nine hundred ninety-nine thousand, eight hundred eighty-nine".