70111707257 has 2 divisors, whose sum is σ = 70111707258. Its totient is φ = 70111707256.

The previous prime is 70111707251. The next prime is 70111707269. The reversal of 70111707257 is 75270711107.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69002883856 + 1108823401 = 262684^2 + 33299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70111707257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70111707257.

It is not a weakly prime, because it can be changed into another prime (70111707251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35055853628 + 35055853629.

It is an arithmetic number, because the mean of its divisors is an integer number (35055853629).

Almost surely, 2^70111707257 is an apocalyptic number.

It is an amenable number.

70111707257 is a deficient number, since it is larger than the sum of its proper divisors (1).

70111707257 is an equidigital number, since it uses as much as digits as its factorization.

70111707257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24010, while the sum is 38.

The spelling of 70111707257 in words is "seventy billion, one hundred eleven million, seven hundred seven thousand, two hundred fifty-seven".