2187557040887 has 4 divisors (see below), whose sum is σ = 2187699744696. Its totient is φ = 2187414337080.

The previous prime is 2187557040863. The next prime is 2187557040901. The reversal of 2187557040887 is 7880407557812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2187557040887 - 2³⁸ = 1912679133943 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 (2187527040887) 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, 71328908 + ... + 71359569.

It is an arithmetic number, because the mean of its divisors is an integer number (546924936174).

Almost surely, 2^{2187557040887} is an apocalyptic number.

2187557040887 is a deficient number, since it is larger than the sum of its proper divisors (142703809).

2187557040887 is a wasteful number, since it uses less digits than its factorization.

2187557040887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142703808.

The product of its (nonzero) digits is 35123200, while the sum is 62.

The spelling of 2187557040887 in words is "two trillion, one hundred eighty-seven billion, five hundred fifty-seven million, forty thousand, eight hundred eighty-seven".