85715321899619 has 2 divisors, whose sum is σ = 85715321899620. Its totient is φ = 85715321899618.

The previous prime is 85715321899591. The next prime is 85715321899663. The reversal of 85715321899619 is 91699812351758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85715321899619 - 2¹² = 85715321895523 is a prime.

It is a super-2 number, since 2×85715321899619² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85715821899619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42857660949809 + 42857660949810.

It is an arithmetic number, because the mean of its divisors is an integer number (42857660949810).

Almost surely, 2^{85715321899619} is an apocalyptic number.

85715321899619 is a deficient number, since it is larger than the sum of its proper divisors (1).

85715321899619 is an equidigital number, since it uses as much as digits as its factorization.

85715321899619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 293932800, while the sum is 74.

The spelling of 85715321899619 in words is "eighty-five trillion, seven hundred fifteen billion, three hundred twenty-one million, eight hundred ninety-nine thousand, six hundred nineteen".