87885121839 has 8 divisors (see below), whose sum is σ = 117217865520. Its totient is φ = 58571229696.

The previous prime is 87885121811. The next prime is 87885121871. The reversal of 87885121839 is 93812158878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87885121839 - 2¹⁹ = 87884597551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87885121039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4702002 + ... + 4720655.

It is an arithmetic number, because the mean of its divisors is an integer number (14652233190).

Almost surely, 2^87885121839 is an apocalyptic number.

87885121839 is a deficient number, since it is larger than the sum of its proper divisors (29332743681).

87885121839 is a wasteful number, since it uses less digits than its factorization.

87885121839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9425769.

The product of its digits is 7741440, while the sum is 60.

The spelling of 87885121839 in words is "eighty-seven billion, eight hundred eighty-five million, one hundred twenty-one thousand, eight hundred thirty-nine".