85455377169 has 4 divisors (see below), whose sum is σ = 113940502896. Its totient is φ = 56970251444.

The previous prime is 85455377167. The next prime is 85455377173. The reversal of 85455377169 is 96177355458.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85455377169 - 2¹ = 85455377167 is a prime.

It is a super-2 number, since 2×85455377169² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85455377167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14242562859 + ... + 14242562864.

It is an arithmetic number, because the mean of its divisors is an integer number (28485125724).

Almost surely, 2^85455377169 is an apocalyptic number.

It is an amenable number.

85455377169 is a deficient number, since it is larger than the sum of its proper divisors (28485125727).

85455377169 is a wasteful number, since it uses less digits than its factorization.

85455377169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28485125726.

The product of its digits is 31752000, while the sum is 60.

The spelling of 85455377169 in words is "eighty-five billion, four hundred fifty-five million, three hundred seventy-seven thousand, one hundred sixty-nine".