85809670775 has 12 divisors (see below), whose sum is σ = 106409595600. Its totient is φ = 68644121280.

The previous prime is 85809670763. The next prime is 85809670787. The reversal of 85809670775 is 57707690858.

It is an interprime number because it is at equal distance from previous prime (85809670763) and next prime (85809670787).

It is not a de Polignac number, because 85809670775 - 2¹⁶ = 85809605239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459371 + ... + 618579.

It is an arithmetic number, because the mean of its divisors is an integer number (8867466300).

Almost surely, 2^85809670775 is an apocalyptic number.

85809670775 is a deficient number, since it is larger than the sum of its proper divisors (20599924825).

85809670775 is a wasteful number, since it uses less digits than its factorization.

85809670775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180778 (or 180773 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 62.

The spelling of 85809670775 in words is "eighty-five billion, eight hundred nine million, six hundred seventy thousand, seven hundred seventy-five".