8564121453 has 4 divisors (see below), whose sum is σ = 11418828608. Its totient is φ = 5709414300.

The previous prime is 8564121443. The next prime is 8564121469. The reversal of 8564121453 is 3541214658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8564121453 - 2⁴ = 8564121437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8564121443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427353573 + ... + 1427353578.

It is an arithmetic number, because the mean of its divisors is an integer number (2854707152).

Almost surely, 2^8564121453 is an apocalyptic number.

It is an amenable number.

8564121453 is a deficient number, since it is larger than the sum of its proper divisors (2854707155).

8564121453 is a wasteful number, since it uses less digits than its factorization.

8564121453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854707154.

The product of its digits is 115200, while the sum is 39.

The square root of 8564121453 is about 92542.5386133318. The cubic root of 8564121453 is about 2045.9464976946.

The spelling of 8564121453 in words is "eight billion, five hundred sixty-four million, one hundred twenty-one thousand, four hundred fifty-three".