172613105869 has 2 divisors, whose sum is σ = 172613105870. Its totient is φ = 172613105868.

The previous prime is 172613105851. The next prime is 172613105893. The reversal of 172613105869 is 968501316271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123854724900 + 48758380969 = 351930^2 + 220813^2 .

It is a cyclic number.

It is not a de Polignac number, because 172613105869 - 2¹⁷ = 172612974797 is a prime.

It is a super-2 number, since 2×172613105869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172613105839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86306552934 + 86306552935.

It is an arithmetic number, because the mean of its divisors is an integer number (86306552935).

Almost surely, 2^172613105869 is an apocalyptic number.

It is an amenable number.

172613105869 is a deficient number, since it is larger than the sum of its proper divisors (1).

172613105869 is an equidigital number, since it uses as much as digits as its factorization.

172613105869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 172613105869 in words is "one hundred seventy-two billion, six hundred thirteen million, one hundred five thousand, eight hundred sixty-nine".