85574878340523 has 24 divisors (see below), whose sum is σ = 134783885851200. Its totient is φ = 47874057809760.

The previous prime is 85574878340521. The next prime is 85574878340573. The reversal of 85574878340523 is 32504387847558.

It is not a de Polignac number, because 85574878340523 - 2¹ = 85574878340521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85574878340521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7672119073 + ... + 7672130226.

It is an arithmetic number, because the mean of its divisors is an integer number (5615995243800).

Almost surely, 2^{85574878340523} is an apocalyptic number.

85574878340523 is a deficient number, since it is larger than the sum of its proper divisors (49209007510677).

85574878340523 is a wasteful number, since it uses less digits than its factorization.

85574878340523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15344249339 (or 15344249326 counting only the distinct ones).

The product of its (nonzero) digits is 903168000, while the sum is 69.

The spelling of 85574878340523 in words is "eighty-five trillion, five hundred seventy-four billion, eight hundred seventy-eight million, three hundred forty thousand, five hundred twenty-three".