85510289899 has 8 divisors (see below), whose sum is σ = 87502838192. Its totient is φ = 83517920640.

The previous prime is 85510289897. The next prime is 85510289927. The reversal of 85510289899 is 99898201558.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 85510289899 - 2¹ = 85510289897 is a prime.

It is a super-2 number, since 2×85510289899² (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 85510289899.

It is not an unprimeable number, because it can be changed into a prime (85510289897) 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, 1745767 + ... + 1794079.

It is an arithmetic number, because the mean of its divisors is an integer number (10937854774).

Almost surely, 2^85510289899 is an apocalyptic number.

85510289899 is a deficient number, since it is larger than the sum of its proper divisors (1992548293).

85510289899 is a wasteful number, since it uses less digits than its factorization.

85510289899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89517.

The product of its (nonzero) digits is 18662400, while the sum is 64.

The spelling of 85510289899 in words is "eighty-five billion, five hundred ten million, two hundred eighty-nine thousand, eight hundred ninety-nine".