87017774878 has 8 divisors (see below), whose sum is σ = 130558286880. Its totient is φ = 43498345920.

The previous prime is 87017774843. The next prime is 87017774917. The reversal of 87017774878 is 87847771078.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5260438 + ... + 5276953.

It is an arithmetic number, because the mean of its divisors is an integer number (16319785860).

Almost surely, 2^87017774878 is an apocalyptic number.

87017774878 is a deficient number, since it is larger than the sum of its proper divisors (43540512002).

87017774878 is a wasteful number, since it uses less digits than its factorization.

87017774878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10541522.

The product of its (nonzero) digits is 34420736, while the sum is 64.

The spelling of 87017774878 in words is "eighty-seven billion, seventeen million, seven hundred seventy-four thousand, eight hundred seventy-eight".