138271356850782 has 16 divisors (see below), whose sum is σ = 276542846874000. Its totient is φ = 46090430088192.

The previous prime is 138271356850763. The next prime is 138271356850793. The reversal of 138271356850782 is 287058653172831.

It is a happy number.

It is a super-2 number, since 2×138271356850782² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12429844 + ... + 20761592.

It is an arithmetic number, because the mean of its divisors is an integer number (17283927929625).

Almost surely, 2^{138271356850782} is an apocalyptic number.

138271356850782 is an abundant number, since it is smaller than the sum of its proper divisors (138271490023218).

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

138271356850782 is a wasteful number, since it uses less digits than its factorization.

138271356850782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097707.

The product of its (nonzero) digits is 135475200, while the sum is 66.

The spelling of 138271356850782 in words is "one hundred thirty-eight trillion, two hundred seventy-one billion, three hundred fifty-six million, eight hundred fifty thousand, seven hundred eighty-two".