138758242143557 has 16 divisors (see below), whose sum is σ = 142050874597632. Its totient is φ = 135480181029120.

The previous prime is 138758242143533. The next prime is 138758242143571. The reversal of 138758242143557 is 755341242857831.

It is a cyclic number.

It is not a de Polignac number, because 138758242143557 - 2²⁰ = 138758241094981 is a prime.

It is a super-2 number, since 2×138758242143557² (a number of 29 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 = 138758242143493 and 138758242143502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138758242143457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30542393 + ... + 34790145.

It is an arithmetic number, because the mean of its divisors is an integer number (8878179662352).

Almost surely, 2^{138758242143557} is an apocalyptic number.

It is an amenable number.

138758242143557 is a deficient number, since it is larger than the sum of its proper divisors (3292632454075).

138758242143557 is an equidigital number, since it uses as much as digits as its factorization.

138758242143557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249468.

The product of its digits is 225792000, while the sum is 65.

The spelling of 138758242143557 in words is "one hundred thirty-eight trillion, seven hundred fifty-eight billion, two hundred forty-two million, one hundred forty-three thousand, five hundred fifty-seven".