85557433519 has 8 divisors (see below), whose sum is σ = 90951145488. Its totient is φ = 80203824000.

The previous prime is 85557433517. The next prime is 85557433571. The reversal of 85557433519 is 91533475558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85557433519 - 2¹ = 85557433517 is a prime.

It is a super-2 number, since 2×85557433519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85557433519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85557433513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10021212 + ... + 10029745.

It is an arithmetic number, because the mean of its divisors is an integer number (11368893186).

Almost surely, 2^85557433519 is an apocalyptic number.

85557433519 is a deficient number, since it is larger than the sum of its proper divisors (5393711969).

85557433519 is a wasteful number, since it uses less digits than its factorization.

85557433519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20051225.

The product of its digits is 11340000, while the sum is 55.

The spelling of 85557433519 in words is "eighty-five billion, five hundred fifty-seven million, four hundred thirty-three thousand, five hundred nineteen".