82512136138 has 8 divisors (see below), whose sum is σ = 125865970560. Its totient is φ = 40556812620.

The previous prime is 82512136127. The next prime is 82512136153. The reversal of 82512136138 is 83163121528.

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

It is a super-2 number, since 2×82512136138² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82512136138.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 349627578 + ... + 349627813.

It is an arithmetic number, because the mean of its divisors is an integer number (15733246320).

Almost surely, 2^82512136138 is an apocalyptic number.

82512136138 is a deficient number, since it is larger than the sum of its proper divisors (43353834422).

82512136138 is a wasteful number, since it uses less digits than its factorization.

82512136138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699255452.

The product of its digits is 69120, while the sum is 40.

The spelling of 82512136138 in words is "eighty-two billion, five hundred twelve million, one hundred thirty-six thousand, one hundred thirty-eight".