85090958765 has 4 divisors (see below), whose sum is σ = 102109150524. Its totient is φ = 68072767008.

The previous prime is 85090958707. The next prime is 85090958779. The reversal of 85090958765 is 56785909058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35940955561 + 49150003204 = 189581^2 + 221698^2 .

It is a cyclic number.

It is not a de Polignac number, because 85090958765 - 2⁸ = 85090958509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85090958698 and 85090958707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509095872 + ... + 8509095881.

It is an arithmetic number, because the mean of its divisors is an integer number (25527287631).

Almost surely, 2^85090958765 is an apocalyptic number.

It is an amenable number.

85090958765 is a deficient number, since it is larger than the sum of its proper divisors (17018191759).

85090958765 is a wasteful number, since it uses less digits than its factorization.

85090958765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17018191758.

The product of its (nonzero) digits is 27216000, while the sum is 62.

The spelling of 85090958765 in words is "eighty-five billion, ninety million, nine hundred fifty-eight thousand, seven hundred sixty-five".