138542814643 has 8 divisors (see below), whose sum is σ = 143101539200. Its totient is φ = 133989690240.

The previous prime is 138542814637. The next prime is 138542814647. The reversal of 138542814643 is 346418245831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138542814643 is a prime.

It is a super-2 number, since 2×138542814643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138542814647) 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, 1349718 + ... + 1448731.

It is an arithmetic number, because the mean of its divisors is an integer number (17887692400).

Almost surely, 2^138542814643 is an apocalyptic number.

138542814643 is a deficient number, since it is larger than the sum of its proper divisors (4558724557).

138542814643 is a wasteful number, since it uses less digits than its factorization.

138542814643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800077.

The product of its digits is 2211840, while the sum is 49.

The spelling of 138542814643 in words is "one hundred thirty-eight billion, five hundred forty-two million, eight hundred fourteen thousand, six hundred forty-three".