85417064387 has 2 divisors, whose sum is σ = 85417064388. Its totient is φ = 85417064386.

The previous prime is 85417064339. The next prime is 85417064399. The reversal of 85417064387 is 78346071458.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85417064387 is a prime.

It is not a weakly prime, because it can be changed into another prime (85417064287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42708532193 + 42708532194.

It is an arithmetic number, because the mean of its divisors is an integer number (42708532194).

Almost surely, 2^85417064387 is an apocalyptic number.

85417064387 is a deficient number, since it is larger than the sum of its proper divisors (1).

85417064387 is an equidigital number, since it uses as much as digits as its factorization.

85417064387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 85417064387 in words is "eighty-five billion, four hundred seventeen million, sixty-four thousand, three hundred eighty-seven".