85400169317 has 4 divisors (see below), whose sum is σ = 85412353740. Its totient is φ = 85387984896.

The previous prime is 85400169293. The next prime is 85400169347. The reversal of 85400169317 is 71396100458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71396100458 = 2 ⋅35698050229.

It can be written as a sum of positive squares in 2 ways, for example, as 43959831556 + 41440337761 = 209666^2 + 203569^2 .

It is a cyclic number.

It is not a de Polignac number, because 85400169317 - 2⁸ = 85400169061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85400169347) 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, 6081692 + ... + 6095717.

It is an arithmetic number, because the mean of its divisors is an integer number (21353088435).

Almost surely, 2^85400169317 is an apocalyptic number.

It is an amenable number.

85400169317 is a deficient number, since it is larger than the sum of its proper divisors (12184423).

85400169317 is a wasteful number, since it uses less digits than its factorization.

85400169317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184422.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 85400169317 in words is "eighty-five billion, four hundred million, one hundred sixty-nine thousand, three hundred seventeen".