138861531306367 has 8 divisors (see below), whose sum is σ = 139509072663696. Its totient is φ = 138215042008512.

The previous prime is 138861531306343. The next prime is 138861531306403. The reversal of 138861531306367 is 763603135168831.

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

It is a cyclic number.

It is not a de Polignac number, because 138861531306367 - 2¹¹ = 138861531304319 is a prime.

It is a super-2 number, since 2×138861531306367² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138861531106367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262750273 + ... + 263278234.

It is an arithmetic number, because the mean of its divisors is an integer number (17438634082962).

Almost surely, 2^{138861531306367} is an apocalyptic number.

138861531306367 is a deficient number, since it is larger than the sum of its proper divisors (647541357329).

138861531306367 is an equidigital number, since it uses as much as digits as its factorization.

138861531306367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526029737.

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 138861531306367 in words is "one hundred thirty-eight trillion, eight hundred sixty-one billion, five hundred thirty-one million, three hundred six thousand, three hundred sixty-seven".