85755484220505 has 128 divisors (see below), whose sum is σ = 166234790522880. Its totient is φ = 37237259304960.

The previous prime is 85755484220453. The next prime is 85755484220509. The reversal of 85755484220505 is 50502248455758.

85755484220505 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 85755484220505 - 2⁸ = 85755484220249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85755484220509) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9007786 + ... + 15895004.

It is an arithmetic number, because the mean of its divisors is an integer number (1298709300960).

Almost surely, 2^{85755484220505} is an apocalyptic number.

85755484220505 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85755484220505 is a deficient number, since it is larger than the sum of its proper divisors (80479306302375).

85755484220505 is a wasteful number, since it uses less digits than its factorization.

85755484220505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887471.

The product of its (nonzero) digits is 89600000, while the sum is 60.

The spelling of 85755484220505 in words is "eighty-five trillion, seven hundred fifty-five billion, four hundred eighty-four million, two hundred twenty thousand, five hundred five".