87218009247 has 8 divisors (see below), whose sum is σ = 116298126000. Its totient is φ = 58141616000.

The previous prime is 87218009243. The next prime is 87218009273. The reversal of 87218009247 is 74290081278.

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 87218009247 - 2² = 87218009243 is a prime.

It is a super-2 number, since 2×87218009247² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87218009196 and 87218009205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87218009243) 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, 875754 + ... + 970247.

It is an arithmetic number, because the mean of its divisors is an integer number (14537265750).

Almost surely, 2^87218009247 is an apocalyptic number.

87218009247 is a deficient number, since it is larger than the sum of its proper divisors (29080116753).

87218009247 is a wasteful number, since it uses less digits than its factorization.

87218009247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861753.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 87218009247 in words is "eighty-seven billion, two hundred eighteen million, nine thousand, two hundred forty-seven".