87872008688641 has 4 divisors (see below), whose sum is σ = 87872682007984. Its totient is φ = 87871335369300.

The previous prime is 87872008688623. The next prime is 87872008688689. The reversal of 87872008688641 is 14688680027878.

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 87872008688641 - 2²¹ = 87872006591489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87872008688041) 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, 336463875 + ... + 336724936.

It is an arithmetic number, because the mean of its divisors is an integer number (21968170501996).

Almost surely, 2^{87872008688641} is an apocalyptic number.

It is an amenable number.

87872008688641 is a deficient number, since it is larger than the sum of its proper divisors (673319343).

87872008688641 is a wasteful number, since it uses less digits than its factorization.

87872008688641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673319342.

The product of its (nonzero) digits is 462422016, while the sum is 73.

The spelling of 87872008688641 in words is "eighty-seven trillion, eight hundred seventy-two billion, eight million, six hundred eighty-eight thousand, six hundred forty-one".