70643836429 has 2 divisors, whose sum is σ = 70643836430. Its totient is φ = 70643836428.

The previous prime is 70643836399. The next prime is 70643836433. The reversal of 70643836429 is 92463834607.

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., 68067766404 + 2576070025 = 260898^2 + 50755^2 .

It is a cyclic number.

It is not a de Polignac number, because 70643836429 - 2⁹ = 70643835917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70643836489) 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, 35321918214 + 35321918215.

It is an arithmetic number, because the mean of its divisors is an integer number (35321918215).

Almost surely, 2^70643836429 is an apocalyptic number.

It is an amenable number.

70643836429 is a deficient number, since it is larger than the sum of its proper divisors (1).

70643836429 is an equidigital number, since it uses as much as digits as its factorization.

70643836429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 70643836429 in words is "seventy billion, six hundred forty-three million, eight hundred thirty-six thousand, four hundred twenty-nine".