87111678973 has 8 divisors (see below), whose sum is σ = 95312917440. Its totient is φ = 78957439680.

The previous prime is 87111678967. The next prime is 87111679001. The reversal of 87111678973 is 37987611178.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87111678973 - 2⁹ = 87111678461 is a prime.

It is a super-2 number, since 2×87111678973² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87111678673) 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, 11745913 + ... + 11753326.

It is an arithmetic number, because the mean of its divisors is an integer number (11914114680).

Almost surely, 2^87111678973 is an apocalyptic number.

It is an amenable number.

87111678973 is a deficient number, since it is larger than the sum of its proper divisors (8201238467).

87111678973 is a wasteful number, since it uses less digits than its factorization.

87111678973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23499587.

The product of its digits is 3556224, while the sum is 58.

The spelling of 87111678973 in words is "eighty-seven billion, one hundred eleven million, six hundred seventy-eight thousand, nine hundred seventy-three".