82522909521 has 24 divisors (see below), whose sum is σ = 128822622656. Its totient is φ = 50603862240.

The previous prime is 82522909507. The next prime is 82522909541. The reversal of 82522909521 is 12590922528.

It is a happy number.

82522909521 is a `hidden beast` number, since 8 + 252 + 290 + 95 + 21 = 666.

It is not a de Polignac number, because 82522909521 - 2⁶ = 82522909457 is a prime.

It is a super-2 number, since 2×82522909521² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (82522909541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1213045 + ... + 1279266.

Almost surely, 2^82522909521 is an apocalyptic number.

It is an amenable number.

82522909521 is a deficient number, since it is larger than the sum of its proper divisors (46299713135).

82522909521 is a wasteful number, since it uses less digits than its factorization.

82522909521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492613 (or 2492610 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 82522909521 in words is "eighty-two billion, five hundred twenty-two million, nine hundred nine thousand, five hundred twenty-one".