70205256497 has 2 divisors, whose sum is σ = 70205256498. Its totient is φ = 70205256496.

The previous prime is 70205256491. The next prime is 70205256581. The reversal of 70205256497 is 79465250207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35257197361 + 34948059136 = 187769^2 + 186944^2 .

It is a cyclic number.

It is not a de Polignac number, because 70205256497 - 2¹⁰ = 70205255473 is a prime.

It is a super-2 number, since 2×70205256497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70205256491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35102628248 + 35102628249.

It is an arithmetic number, because the mean of its divisors is an integer number (35102628249).

Almost surely, 2^70205256497 is an apocalyptic number.

It is an amenable number.

70205256497 is a deficient number, since it is larger than the sum of its proper divisors (1).

70205256497 is an equidigital number, since it uses as much as digits as its factorization.

70205256497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 70205256497 in words is "seventy billion, two hundred five million, two hundred fifty-six thousand, four hundred ninety-seven".