8212785453 has 24 divisors (see below), whose sum is σ = 12699138816. Its totient is φ = 5298566400.

The previous prime is 8212785433. The next prime is 8212785491. The reversal of 8212785453 is 3545872128.

8212785453 is a `hidden beast` number, since 82 + 1 + 27 + 8 + 545 + 3 = 666.

It is not a de Polignac number, because 8212785453 - 2⁸ = 8212785197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8212785399 and 8212785408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212785433) 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, 537588 + ... + 552653.

It is an arithmetic number, because the mean of its divisors is an integer number (529130784).

Almost surely, 2^8212785453 is an apocalyptic number.

It is an amenable number.

8212785453 is a deficient number, since it is larger than the sum of its proper divisors (4486353363).

8212785453 is a wasteful number, since it uses less digits than its factorization.

8212785453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090287 (or 1090275 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 8212785453 is about 90624.4197388320. The cubic root of 8212785453 is about 2017.5771897333.

The spelling of 8212785453 in words is "eight billion, two hundred twelve million, seven hundred eighty-five thousand, four hundred fifty-three".