82858718850138 has 160 divisors (see below), whose sum is σ = 231496070940288. Its totient is φ = 21520095292800.

The previous prime is 82858718850097. The next prime is 82858718850161. The reversal of 82858718850138 is 83105881785828.

82858718850138 is a `hidden beast` number, since 8 + 2 + 8 + 5 + 8 + 7 + 1 + 88 + 501 + 38 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 166866268 + ... + 167362088.

Almost surely, 2^{82858718850138} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82858718850138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115748035470144).

82858718850138 is an abundant number, since it is smaller than the sum of its proper divisors (148637352090150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82858718850138 is a wasteful number, since it uses less digits than its factorization.

82858718850138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509250 (or 509241 counting only the distinct ones).

The product of its (nonzero) digits is 275251200, while the sum is 72.

The spelling of 82858718850138 in words is "eighty-two trillion, eight hundred fifty-eight billion, seven hundred eighteen million, eight hundred fifty thousand, one hundred thirty-eight".