85561105026845 has 32 divisors (see below), whose sum is σ = 117763919573760. Its totient is φ = 58459003384320.

The previous prime is 85561105026827. The next prime is 85561105026913. The reversal of 85561105026845 is 54862050116558.

It is not a de Polignac number, because 85561105026845 - 2¹⁴ = 85561105010461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227876234 + ... + 228251396.

It is an arithmetic number, because the mean of its divisors is an integer number (3680122486680).

Almost surely, 2^{85561105026845} is an apocalyptic number.

It is an amenable number.

85561105026845 is a deficient number, since it is larger than the sum of its proper divisors (32202814546915).

85561105026845 is a wasteful number, since it uses less digits than its factorization.

85561105026845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398645.

The product of its (nonzero) digits is 11520000, while the sum is 56.

The spelling of 85561105026845 in words is "eighty-five trillion, five hundred sixty-one billion, one hundred five million, twenty-six thousand, eight hundred forty-five".