85557655555 has 4 divisors (see below), whose sum is σ = 102669186672. Its totient is φ = 68446124440.

The previous prime is 85557655549. The next prime is 85557655559. The reversal of 85557655555 is 55555675558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55555675558 = 2 ⋅27777837779.

It is not a de Polignac number, because 85557655555 - 2²⁵ = 85524101123 is a prime.

It is a super-2 number, since 2×85557655555² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85557655493 and 85557655502.

It is not an unprimeable number, because it can be changed into a prime (85557655559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8555765551 + ... + 8555765560.

It is an arithmetic number, because the mean of its divisors is an integer number (25667296668).

Almost surely, 2^85557655555 is an apocalyptic number.

85557655555 is a deficient number, since it is larger than the sum of its proper divisors (17111531117).

85557655555 is a wasteful number, since it uses less digits than its factorization.

85557655555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17111531116.

The product of its digits is 131250000, while the sum is 61.

The spelling of 85557655555 in words is "eighty-five billion, five hundred fifty-seven million, six hundred fifty-five thousand, five hundred fifty-five".