85204064969 has 4 divisors (see below), whose sum is σ = 87185554896. Its totient is φ = 83222575044.

The previous prime is 85204064929. The next prime is 85204064983. The reversal of 85204064969 is 96946040258.

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 a de Polignac number, because none of the positive numbers 2^k-85204064969 is a prime.

It is a super-2 number, since 2×85204064969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85204064969.

It is not an unprimeable number, because it can be changed into a prime (85204064909) 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, 990744899 + ... + 990744984.

It is an arithmetic number, because the mean of its divisors is an integer number (21796388724).

Almost surely, 2^85204064969 is an apocalyptic number.

It is an amenable number.

85204064969 is a deficient number, since it is larger than the sum of its proper divisors (1981489927).

85204064969 is a wasteful number, since it uses less digits than its factorization.

85204064969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981489926.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 85204064969 in words is "eighty-five billion, two hundred four million, sixty-four thousand, nine hundred sixty-nine".