53563186897 has 4 divisors (see below), whose sum is σ = 58432567536. Its totient is φ = 48693806260.

The previous prime is 53563186871. The next prime is 53563186903. The reversal of 53563186897 is 79868136535.

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 53563186897 - 2¹⁹ = 53562662609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53563186837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2434690303 + ... + 2434690324.

It is an arithmetic number, because the mean of its divisors is an integer number (14608141884).

Almost surely, 2^53563186897 is an apocalyptic number.

It is an amenable number.

53563186897 is a deficient number, since it is larger than the sum of its proper divisors (4869380639).

53563186897 is a wasteful number, since it uses less digits than its factorization.

53563186897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869380638.

The product of its digits is 32659200, while the sum is 61.

The spelling of 53563186897 in words is "fifty-three billion, five hundred sixty-three million, one hundred eighty-six thousand, eight hundred ninety-seven".