87563825887 has 4 divisors (see below), whose sum is σ = 87564531600. Its totient is φ = 87563120176.

The previous prime is 87563825837. The next prime is 87563825897. The reversal of 87563825887 is 78852836578.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78852836578 = 2 ⋅39426418289.

It is a cyclic number.

It is not a de Polignac number, because 87563825887 - 2²³ = 87555437279 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 (87563825837) 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, 111883 + ... + 433180.

It is an arithmetic number, because the mean of its divisors is an integer number (21891132900).

Almost surely, 2^87563825887 is an apocalyptic number.

87563825887 is a deficient number, since it is larger than the sum of its proper divisors (705713).

87563825887 is a wasteful number, since it uses less digits than its factorization.

87563825887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705712.

The product of its digits is 180633600, while the sum is 67.

The spelling of 87563825887 in words is "eighty-seven billion, five hundred sixty-three million, eight hundred twenty-five thousand, eight hundred eighty-seven".