85220741855 has 16 divisors (see below), whose sum is σ = 108365402880. Its totient is φ = 64115876352.

The previous prime is 85220741843. The next prime is 85220741867. The reversal of 85220741855 is 55814702258.

It is an interprime number because it is at equal distance from previous prime (85220741843) and next prime (85220741867).

It is a cyclic number.

It is not a de Polignac number, because 85220741855 - 2⁶ = 85220741791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284015 + ... + 501104.

It is an arithmetic number, because the mean of its divisors is an integer number (6772837680).

Almost surely, 2^85220741855 is an apocalyptic number.

85220741855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85220741855 is a deficient number, since it is larger than the sum of its proper divisors (23144661025).

85220741855 is a wasteful number, since it uses less digits than its factorization.

85220741855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786418.

The product of its (nonzero) digits is 896000, while the sum is 47.

The spelling of 85220741855 in words is "eighty-five billion, two hundred twenty million, seven hundred forty-one thousand, eight hundred fifty-five".