85456560477 has 32 divisors (see below), whose sum is σ = 117682274304. Its totient is φ = 55131920000.

The previous prime is 85456560457. The next prime is 85456560479. The reversal of 85456560477 is 77406565458.

It is a cyclic number.

It is not a de Polignac number, because 85456560477 - 2¹⁹ = 85456036189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85456560479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4487977 + ... + 4506977.

It is an arithmetic number, because the mean of its divisors is an integer number (3677571072).

Almost surely, 2^85456560477 is an apocalyptic number.

It is an amenable number.

85456560477 is a deficient number, since it is larger than the sum of its proper divisors (32225713827).

85456560477 is a wasteful number, since it uses less digits than its factorization.

85456560477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19409.

The product of its (nonzero) digits is 28224000, while the sum is 57.

The spelling of 85456560477 in words is "eighty-five billion, four hundred fifty-six million, five hundred sixty thousand, four hundred seventy-seven".