705520187513 has 2 divisors, whose sum is σ = 705520187514. Its totient is φ = 705520187512.

The previous prime is 705520187473. The next prime is 705520187629. The reversal of 705520187513 is 315781025507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471217721209 + 234302466304 = 686453^2 + 484048^2 .

It is a cyclic number.

It is not a de Polignac number, because 705520187513 - 2²⁰ = 705519138937 is a prime.

It is a super-2 number, since 2×705520187513² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (705520387513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352760093756 + 352760093757.

It is an arithmetic number, because the mean of its divisors is an integer number (352760093757).

Almost surely, 2^705520187513 is an apocalyptic number.

It is an amenable number.

705520187513 is a deficient number, since it is larger than the sum of its proper divisors (1).

705520187513 is an equidigital number, since it uses as much as digits as its factorization.

705520187513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 705520187513 in words is "seven hundred five billion, five hundred twenty million, one hundred eighty-seven thousand, five hundred thirteen".