82415662563521 has 8 divisors (see below), whose sum is σ = 95247635708160. Its totient is φ = 69848266184928.

The previous prime is 82415662563511. The next prime is 82415662563539. The reversal of 82415662563521 is 12536526651428.

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

It is not a de Polignac number, because 82415662563521 - 2³⁴ = 82398482694337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82415662563511) 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, 66144190841 + ... + 66144192086.

It is an arithmetic number, because the mean of its divisors is an integer number (11905954463520).

Almost surely, 2^{82415662563521} is an apocalyptic number.

It is an amenable number.

82415662563521 is a deficient number, since it is larger than the sum of its proper divisors (12831973144639).

82415662563521 is a wasteful number, since it uses less digits than its factorization.

82415662563521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132288383023.

The product of its digits is 20736000, while the sum is 56.

The spelling of 82415662563521 in words is "eighty-two trillion, four hundred fifteen billion, six hundred sixty-two million, five hundred sixty-three thousand, five hundred twenty-one".