170983951613 has 2 divisors, whose sum is σ = 170983951614. Its totient is φ = 170983951612.

The previous prime is 170983951553. The next prime is 170983951627. The reversal of 170983951613 is 316159389071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89029430884 + 81954520729 = 298378^2 + 286277^2 .

It is a cyclic number.

It is not a de Polignac number, because 170983951613 - 2⁶ = 170983951549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170983951813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85491975806 + 85491975807.

It is an arithmetic number, because the mean of its divisors is an integer number (85491975807).

Almost surely, 2^170983951613 is an apocalyptic number.

It is an amenable number.

170983951613 is a deficient number, since it is larger than the sum of its proper divisors (1).

170983951613 is an equidigital number, since it uses as much as digits as its factorization.

170983951613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 170983951613 in words is "one hundred seventy billion, nine hundred eighty-three million, nine hundred fifty-one thousand, six hundred thirteen".