85969565997 has 32 divisors (see below), whose sum is σ = 136428192000. Its totient is φ = 47113102848.

The previous prime is 85969565953. The next prime is 85969566061. The reversal of 85969565997 is 79956596958.

It is not a de Polignac number, because 85969565997 - 2¹⁰ = 85969564973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85969565197) 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 31 ways as a sum of consecutive naturals, for example, 382968 + ... + 564449.

It is an arithmetic number, because the mean of its divisors is an integer number (4263381000).

Almost surely, 2^85969565997 is an apocalyptic number.

85969565997 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

85969565997 is a deficient number, since it is larger than the sum of its proper divisors (50458626003).

85969565997 is a wasteful number, since it uses less digits than its factorization.

85969565997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947605.

The product of its digits is 1653372000, while the sum is 78.

The spelling of 85969565997 in words is "eighty-five billion, nine hundred sixty-nine million, five hundred sixty-five thousand, nine hundred ninety-seven".