85699853387 has 2 divisors, whose sum is σ = 85699853388. Its totient is φ = 85699853386.

The previous prime is 85699853329. The next prime is 85699853401. The reversal of 85699853387 is 78335899658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85699853387 - 2⁸ = 85699853131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85699853387.

It is not a weakly prime, because it can be changed into another prime (85699853887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42849926693 + 42849926694.

It is an arithmetic number, because the mean of its divisors is an integer number (42849926694).

Almost surely, 2^85699853387 is an apocalyptic number.

85699853387 is a deficient number, since it is larger than the sum of its proper divisors (1).

85699853387 is an equidigital number, since it uses as much as digits as its factorization.

85699853387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 391910400, while the sum is 71.

The spelling of 85699853387 in words is "eighty-five billion, six hundred ninety-nine million, eight hundred fifty-three thousand, three hundred eighty-seven".