70643836399 has 2 divisors, whose sum is σ = 70643836400. Its totient is φ = 70643836398.

The previous prime is 70643836391. The next prime is 70643836429. The reversal of 70643836399 is 99363834607.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70643836399 - 2³ = 70643836391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70643836391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35321918199 + 35321918200.

It is an arithmetic number, because the mean of its divisors is an integer number (35321918200).

Almost surely, 2^70643836399 is an apocalyptic number.

70643836399 is a deficient number, since it is larger than the sum of its proper divisors (1).

70643836399 is an equidigital number, since it uses as much as digits as its factorization.

70643836399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 58.

The spelling of 70643836399 in words is "seventy billion, six hundred forty-three million, eight hundred thirty-six thousand, three hundred ninety-nine".