70556640643 has 2 divisors, whose sum is σ = 70556640644. Its totient is φ = 70556640642.

The previous prime is 70556640613. The next prime is 70556640691. The reversal of 70556640643 is 34604665507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70556640643 - 2⁵ = 70556640611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70556640593 and 70556640602.

It is not a weakly prime, because it can be changed into another prime (70556640613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35278320321 + 35278320322.

It is an arithmetic number, because the mean of its divisors is an integer number (35278320322).

Almost surely, 2^70556640643 is an apocalyptic number.

70556640643 is a deficient number, since it is larger than the sum of its proper divisors (1).

70556640643 is an equidigital number, since it uses as much as digits as its factorization.

70556640643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 70556640643 in words is "seventy billion, five hundred fifty-six million, six hundred forty thousand, six hundred forty-three".