85505000555 has 64 divisors (see below), whose sum is σ = 123849855360. Its totient is φ = 56043380736.

The previous prime is 85505000549. The next prime is 85505000561. The reversal of 85505000555 is 55500050558.

It is an interprime number because it is at equal distance from previous prime (85505000549) and next prime (85505000561).

It is a cyclic number.

It is not a de Polignac number, because 85505000555 - 2¹⁸ = 85504738411 is a prime.

It is a super-2 number, since 2×85505000555² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1346909 + ... + 1408961.

It is an arithmetic number, because the mean of its divisors is an integer number (1935153990).

Almost surely, 2^85505000555 is an apocalyptic number.

85505000555 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85505000555 is a deficient number, since it is larger than the sum of its proper divisors (38344854805).

85505000555 is a wasteful number, since it uses less digits than its factorization.

85505000555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62160.

The product of its (nonzero) digits is 125000, while the sum is 38.

The spelling of 85505000555 in words is "eighty-five billion, five hundred five million, five hundred fifty-five", and thus it is an aban number.