85505804549121 has 16 divisors (see below), whose sum is σ = 125513107600320. Its totient is φ = 51346271286720.

The previous prime is 85505804549047. The next prime is 85505804549147. The reversal of 85505804549121 is 12194540850558.

It is not a de Polignac number, because 85505804549121 - 2¹³ = 85505804540929 is a prime.

It is a super-2 number, since 2×85505804549121² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85505804549021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11885707350 + ... + 11885714543.

It is an arithmetic number, because the mean of its divisors is an integer number (7844569225020).

Almost surely, 2^{85505804549121} is an apocalyptic number.

It is an amenable number.

85505804549121 is a deficient number, since it is larger than the sum of its proper divisors (40007303051199).

85505804549121 is a wasteful number, since it uses less digits than its factorization.

85505804549121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23771422016.

The product of its (nonzero) digits is 11520000, while the sum is 57.

The spelling of 85505804549121 in words is "eighty-five trillion, five hundred five billion, eight hundred four million, five hundred forty-nine thousand, one hundred twenty-one".