138424172243286 has 32 divisors (see below), whose sum is σ = 289175371580160. Its totient is φ = 44117781037344.

The previous prime is 138424172243261. The next prime is 138424172243297. The reversal of 138424172243286 is 682342271424831.

It is a super-2 number, since 2×138424172243286² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3861832660 + ... + 3861868503.

It is an arithmetic number, because the mean of its divisors is an integer number (9036730361880).

Almost surely, 2^{138424172243286} is an apocalyptic number.

138424172243286 is an abundant number, since it is smaller than the sum of its proper divisors (150751199336874).

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

138424172243286 is a wasteful number, since it uses less digits than its factorization.

138424172243286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723701300.

The product of its digits is 24772608, while the sum is 57.

The spelling of 138424172243286 in words is "one hundred thirty-eight trillion, four hundred twenty-four billion, one hundred seventy-two million, two hundred forty-three thousand, two hundred eighty-six".