138886688831 has 8 divisors (see below), whose sum is σ = 153012878928. Its totient is φ = 125010520000.

The previous prime is 138886688827. The next prime is 138886688869.

138886688831 is nontrivially palindromic in base 10.

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 138886688831 - 2² = 138886688827 is a prime.

It is a super-2 number, since 2×138886688831² (a number of 23 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 (138886688821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62504150 + ... + 62506371.

It is an arithmetic number, because the mean of its divisors is an integer number (19126609866).

Almost surely, 2^138886688831 is an apocalyptic number.

138886688831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138886688831 is a deficient number, since it is larger than the sum of its proper divisors (14126190097).

138886688831 is a wasteful number, since it uses less digits than its factorization.

138886688831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125010633.

The product of its digits is 84934656, while the sum is 68.

The spelling of 138886688831 in words is "one hundred thirty-eight billion, eight hundred eighty-six million, six hundred eighty-eight thousand, eight hundred thirty-one".