82187038138 has 8 divisors (see below), whose sum is σ = 123635833632. Its totient is φ = 40975093596.

The previous prime is 82187038099. The next prime is 82187038181. The reversal of 82187038138 is 83183078128.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 82187038091 and 82187038100.

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, 59211870 + ... + 59213257.

It is an arithmetic number, because the mean of its divisors is an integer number (15454479204).

Almost surely, 2^82187038138 is an apocalyptic number.

82187038138 is a deficient number, since it is larger than the sum of its proper divisors (41448795494).

82187038138 is a wasteful number, since it uses less digits than its factorization.

82187038138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118425476.

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 82187038138 in words is "eighty-two billion, one hundred eighty-seven million, thirty-eight thousand, one hundred thirty-eight".