85865304567880 has 64 divisors (see below), whose sum is σ = 198420192000000. Its totient is φ = 33417558929664.

The previous prime is 85865304567877. The next prime is 85865304567899. The reversal of 85865304567880 is 8876540356858.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266237361 + ... + 266559679.

It is an arithmetic number, because the mean of its divisors is an integer number (3100315500000).

Almost surely, 2^{85865304567880} is an apocalyptic number.

It is an amenable number.

85865304567880 is an abundant number, since it is smaller than the sum of its proper divisors (112554887432120).

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

85865304567880 is a wasteful number, since it uses less digits than its factorization.

85865304567880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502366 (or 502362 counting only the distinct ones).

The product of its (nonzero) digits is 1548288000, while the sum is 73.

The spelling of 85865304567880 in words is "eighty-five trillion, eight hundred sixty-five billion, three hundred four million, five hundred sixty-seven thousand, eight hundred eighty".