85336571129 has 4 divisors (see below), whose sum is σ = 85565355876. Its totient is φ = 85107786384.

The previous prime is 85336571093. The next prime is 85336571141. The reversal of 85336571129 is 92117563358.

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 20492495104 + 64844076025 = 143152^2 + 254645^2 .

It is a cyclic number.

It is not a de Polignac number, because 85336571129 - 2³² = 81041603833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85336571149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114391814 + ... + 114392559.

It is an arithmetic number, because the mean of its divisors is an integer number (21391338969).

Almost surely, 2^85336571129 is an apocalyptic number.

It is an amenable number.

85336571129 is a deficient number, since it is larger than the sum of its proper divisors (228784747).

85336571129 is a wasteful number, since it uses less digits than its factorization.

85336571129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228784746.

The product of its digits is 1360800, while the sum is 50.

The spelling of 85336571129 in words is "eighty-five billion, three hundred thirty-six million, five hundred seventy-one thousand, one hundred twenty-nine".