85535558531 has 16 divisors (see below), whose sum is σ = 93217069440. Its totient is φ = 78181908480.

The previous prime is 85535558527. The next prime is 85535558597. The reversal of 85535558531 is 13585553558.

It is a cyclic number.

It is not a de Polignac number, because 85535558531 - 2² = 85535558527 is a prime.

It is a super-2 number, since 2×85535558531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85555558531) 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 15 ways as a sum of consecutive naturals, for example, 440126 + ... + 603971.

It is an arithmetic number, because the mean of its divisors is an integer number (5826066840).

Almost surely, 2^85535558531 is an apocalyptic number.

85535558531 is a deficient number, since it is larger than the sum of its proper divisors (7681510909).

85535558531 is a wasteful number, since it uses less digits than its factorization.

85535558531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044254.

The product of its digits is 9000000, while the sum is 53.

The spelling of 85535558531 in words is "eighty-five billion, five hundred thirty-five million, five hundred fifty-eight thousand, five hundred thirty-one".