85615567908 has 96 divisors (see below), whose sum is σ = 224675119872. Its totient is φ = 25177152000.

The previous prime is 85615567907. The next prime is 85615567913. The reversal of 85615567908 is 80976551658.

It is not an unprimeable number, because it can be changed into a prime (85615567907) 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, 4658818 + ... + 4677158.

It is an arithmetic number, because the mean of its divisors is an integer number (2340365832).

Almost surely, 2^85615567908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85615567908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112337559936).

85615567908 is an abundant number, since it is smaller than the sum of its proper divisors (139059551964).

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

85615567908 is a wasteful number, since it uses less digits than its factorization.

85615567908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19685 (or 19683 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 60.

The spelling of 85615567908 in words is "eighty-five billion, six hundred fifteen million, five hundred sixty-seven thousand, nine hundred eight".