87047879187 has 4 divisors (see below), whose sum is σ = 116063838920. Its totient is φ = 58031919456.

The previous prime is 87047879183. The next prime is 87047879189. The reversal of 87047879187 is 78197874078.

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

It is not a de Polignac number, because 87047879187 - 2² = 87047879183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87047879183) 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, 14507979862 + ... + 14507979867.

It is an arithmetic number, because the mean of its divisors is an integer number (29015959730).

Almost surely, 2^87047879187 is an apocalyptic number.

87047879187 is a deficient number, since it is larger than the sum of its proper divisors (29015959733).

87047879187 is a wasteful number, since it uses less digits than its factorization.

87047879187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29015959732.

The product of its (nonzero) digits is 44255232, while the sum is 66.

The spelling of 87047879187 in words is "eighty-seven billion, forty-seven million, eight hundred seventy-nine thousand, one hundred eighty-seven".