70047723709 has 2 divisors, whose sum is σ = 70047723710. Its totient is φ = 70047723708.

The previous prime is 70047723637. The next prime is 70047723731. The reversal of 70047723709 is 90732774007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62473502809 + 7574220900 = 249947^2 + 87030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70047723709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70047723769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35023861854 + 35023861855.

It is an arithmetic number, because the mean of its divisors is an integer number (35023861855).

Almost surely, 2^70047723709 is an apocalyptic number.

It is an amenable number.

70047723709 is a deficient number, since it is larger than the sum of its proper divisors (1).

70047723709 is an equidigital number, since it uses as much as digits as its factorization.

70047723709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518616, while the sum is 46.

The spelling of 70047723709 in words is "seventy billion, forty-seven million, seven hundred twenty-three thousand, seven hundred nine".