85865477916 has 24 divisors (see below), whose sum is σ = 201401754624. Its totient is φ = 28471972720.

The previous prime is 85865477903. The next prime is 85865477917. The reversal of 85865477916 is 61977456858.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85865477917) 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, 18729270 + ... + 18733853.

It is an arithmetic number, because the mean of its divisors is an integer number (8391739776).

Almost surely, 2^85865477916 is an apocalyptic number.

It is an amenable number.

85865477916 is an abundant number, since it is smaller than the sum of its proper divisors (115536276708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85865477916 is a wasteful number, since it uses less digits than its factorization.

85865477916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37463321 (or 37463319 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 66.

The spelling of 85865477916 in words is "eighty-five billion, eight hundred sixty-five million, four hundred seventy-seven thousand, nine hundred sixteen".