138251420543 has 8 divisors (see below), whose sum is σ = 139033898640. Its totient is φ = 137469147840.

The previous prime is 138251420537. The next prime is 138251420563. The reversal of 138251420543 is 345024152831.

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 138251420543 - 2¹⁸ = 138251158399 is a prime.

It is a super-2 number, since 2×138251420543² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138251420497 and 138251420506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138251420563) 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, 1416896 + ... + 1511322.

It is an arithmetic number, because the mean of its divisors is an integer number (17379237330).

Almost surely, 2^138251420543 is an apocalyptic number.

138251420543 is a deficient number, since it is larger than the sum of its proper divisors (782478097).

138251420543 is an equidigital number, since it uses as much as digits as its factorization.

138251420543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102697.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 138251420543 in words is "one hundred thirty-eight billion, two hundred fifty-one million, four hundred twenty thousand, five hundred forty-three".