87563980437 has 4 divisors (see below), whose sum is σ = 116751973920. Its totient is φ = 58375986956.

The previous prime is 87563980433. The next prime is 87563980451. The reversal of 87563980437 is 73408936578.

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 a cyclic number.

It is not a de Polignac number, because 87563980437 - 2² = 87563980433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87563980433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14593996737 + ... + 14593996742.

It is an arithmetic number, because the mean of its divisors is an integer number (29187993480).

Almost surely, 2^87563980437 is an apocalyptic number.

It is an amenable number.

87563980437 is a deficient number, since it is larger than the sum of its proper divisors (29187993483).

87563980437 is a wasteful number, since it uses less digits than its factorization.

87563980437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29187993482.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 87563980437 in words is "eighty-seven billion, five hundred sixty-three million, nine hundred eighty thousand, four hundred thirty-seven".