85021563453 has 16 divisors (see below), whose sum is σ = 115132145856. Its totient is φ = 55797160320.

The previous prime is 85021563433. The next prime is 85021563461. The reversal of 85021563453 is 35436512058.

It is not a de Polignac number, because 85021563453 - 2²⁰ = 85020514877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85021563433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154875 + ... + 440487.

It is an arithmetic number, because the mean of its divisors is an integer number (7195759116).

Almost surely, 2^85021563453 is an apocalyptic number.

It is an amenable number.

85021563453 is a deficient number, since it is larger than the sum of its proper divisors (30110582403).

85021563453 is a wasteful number, since it uses less digits than its factorization.

85021563453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287164.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 85021563453 in words is "eighty-five billion, twenty-one million, five hundred sixty-three thousand, four hundred fifty-three".