82621518524 has 6 divisors (see below), whose sum is σ = 144587657424. Its totient is φ = 41310759260.

The previous prime is 82621518521. The next prime is 82621518557. The reversal of 82621518524 is 42581512628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82621518521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10327689812 + ... + 10327689819.

It is an arithmetic number, because the mean of its divisors is an integer number (24097942904).

Almost surely, 2^82621518524 is an apocalyptic number.

It is an amenable number.

82621518524 is a deficient number, since it is larger than the sum of its proper divisors (61966138900).

82621518524 is a wasteful number, since it uses less digits than its factorization.

82621518524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20655379635 (or 20655379633 counting only the distinct ones).

The product of its digits is 307200, while the sum is 44.

The spelling of 82621518524 in words is "eighty-two billion, six hundred twenty-one million, five hundred eighteen thousand, five hundred twenty-four".