138291853381 has 8 divisors (see below), whose sum is σ = 158804042400. Its totient is φ = 119103031440.

The previous prime is 138291853379. The next prime is 138291853391. The reversal of 138291853381 is 183358192831.

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 138291853381 - 2¹ = 138291853379 is a prime.

It is a super-2 number, since 2×138291853381² (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 (138291853391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330841546 + ... + 330841963.

It is an arithmetic number, because the mean of its divisors is an integer number (19850505300).

Almost surely, 2^138291853381 is an apocalyptic number.

138291853381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

138291853381 is a deficient number, since it is larger than the sum of its proper divisors (20512189019).

138291853381 is a wasteful number, since it uses less digits than its factorization.

138291853381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661683539.

The product of its digits is 1244160, while the sum is 52.

The spelling of 138291853381 in words is "one hundred thirty-eight billion, two hundred ninety-one million, eight hundred fifty-three thousand, three hundred eighty-one".