82317421521487 has 8 divisors (see below), whose sum is σ = 85401359514000. Its totient is φ = 79249843943424.

The previous prime is 82317421521427. The next prime is 82317421521493. The reversal of 82317421521487 is 78412512471328.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82317421521487 is a prime.

It is a super-2 number, since 2×82317421521487² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82317421521427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4090093362 + ... + 4090113487.

It is an arithmetic number, because the mean of its divisors is an integer number (10675169939250).

Almost surely, 2^{82317421521487} is an apocalyptic number.

82317421521487 is a deficient number, since it is larger than the sum of its proper divisors (3083937992513).

82317421521487 is a wasteful number, since it uses less digits than its factorization.

82317421521487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180207225.

The product of its digits is 6021120, while the sum is 55.

The spelling of 82317421521487 in words is "eighty-two trillion, three hundred seventeen billion, four hundred twenty-one million, five hundred twenty-one thousand, four hundred eighty-seven".