87508822187 has 4 divisors (see below), whose sum is σ = 87509425080. Its totient is φ = 87508219296.

The previous prime is 87508822183. The next prime is 87508822201. The reversal of 87508822187 is 78122880578.

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.

It is a cyclic number.

It is not a de Polignac number, because 87508822187 - 2² = 87508822183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87508822183) 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, 63764 + ... + 423182.

It is an arithmetic number, because the mean of its divisors is an integer number (21877356270).

Almost surely, 2^87508822187 is an apocalyptic number.

87508822187 is a deficient number, since it is larger than the sum of its proper divisors (602893).

87508822187 is a wasteful number, since it uses less digits than its factorization.

87508822187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602892.

The product of its (nonzero) digits is 4014080, while the sum is 56.

The spelling of 87508822187 in words is "eighty-seven billion, five hundred eight million, eight hundred twenty-two thousand, one hundred eighty-seven".