138182253342 has 64 divisors (see below), whose sum is σ = 324046808064. Its totient is φ = 38458402560.

The previous prime is 138182253329. The next prime is 138182253347. The reversal of 138182253342 is 243352281831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 138182253294 and 138182253303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138182253347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1063023 + ... + 1185909.

It is an arithmetic number, because the mean of its divisors is an integer number (5063231376).

Almost surely, 2^138182253342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138182253342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162023404032).

138182253342 is an abundant number, since it is smaller than the sum of its proper divisors (185864554722).

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

138182253342 is a wasteful number, since it uses less digits than its factorization.

138182253342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123593.

The product of its digits is 276480, while the sum is 42.

The spelling of 138182253342 in words is "one hundred thirty-eight billion, one hundred eighty-two million, two hundred fifty-three thousand, three hundred forty-two".