85564102660 has 12 divisors (see below), whose sum is σ = 179684615628. Its totient is φ = 34225641056.

The previous prime is 85564102651. The next prime is 85564102693. The reversal of 85564102660 is 6620146558.

It can be written as a sum of positive squares in 2 ways, for example, as 35241051076 + 50323051584 = 187726^2 + 224328^2 .

It is a super-2 number, since 2×85564102660² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2139102547 + ... + 2139102586.

It is an arithmetic number, because the mean of its divisors is an integer number (14973717969).

Almost surely, 2^85564102660 is an apocalyptic number.

It is an amenable number.

85564102660 is an abundant number, since it is smaller than the sum of its proper divisors (94120512968).

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

85564102660 is a wasteful number, since it uses less digits than its factorization.

85564102660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278205142 (or 4278205140 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 85564102660 in words is "eighty-five billion, five hundred sixty-four million, one hundred two thousand, six hundred sixty".