82689129088 has 32 divisors (see below), whose sum is σ = 165373296660. Its totient is φ = 41183674368.

The previous prime is 82689129059. The next prime is 82689129097. The reversal of 82689129088 is 88092198628.

It can be written as a sum of positive squares in 2 ways, for example, as 79068940864 + 3620188224 = 281192^2 + 60168^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223931 + ... + 1289722.

Almost surely, 2^82689129088 is an apocalyptic number.

It is an amenable number.

82689129088 is a deficient number, since it is larger than the sum of its proper divisors (82684167572).

82689129088 is a wasteful number, since it uses less digits than its factorization.

82689129088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513924 (or 2513912 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 61.

The spelling of 82689129088 in words is "eighty-two billion, six hundred eighty-nine million, one hundred twenty-nine thousand, eighty-eight".