138541622434 has 8 divisors (see below), whose sum is σ = 220036694508. Its totient is φ = 65196057600.

The previous prime is 138541622413. The next prime is 138541622473. The reversal of 138541622434 is 434226145831.

It can be written as a sum of positive squares in 2 ways, for example, as 127130041809 + 11411580625 = 356553^2 + 106825^2 .

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

It is a super-2 number, since 2×138541622434² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037376767 + ... + 2037376834.

Almost surely, 2^138541622434 is an apocalyptic number.

138541622434 is a deficient number, since it is larger than the sum of its proper divisors (81495072074).

138541622434 is a wasteful number, since it uses less digits than its factorization.

138541622434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074753620.

The product of its digits is 552960, while the sum is 43.

The spelling of 138541622434 in words is "one hundred thirty-eight billion, five hundred forty-one million, six hundred twenty-two thousand, four hundred thirty-four".