85511259669 has 32 divisors (see below), whose sum is σ = 128199794688. Its totient is φ = 50257368000.

The previous prime is 85511259637. The next prime is 85511259689. The reversal of 85511259669 is 96695211558.

It is a happy number.

It is not a de Polignac number, because 85511259669 - 2⁵ = 85511259637 is a prime.

It is a super-2 number, since 2×85511259669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85511259689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156229 + ... + 442074.

It is an arithmetic number, because the mean of its divisors is an integer number (4006243584).

Almost surely, 2^85511259669 is an apocalyptic number.

It is an amenable number.

85511259669 is a deficient number, since it is larger than the sum of its proper divisors (42688535019).

85511259669 is a wasteful number, since it uses less digits than its factorization.

85511259669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598449.

The product of its digits is 5832000, while the sum is 57.

The spelling of 85511259669 in words is "eighty-five billion, five hundred eleven million, two hundred fifty-nine thousand, six hundred sixty-nine".