138781114538 has 32 divisors (see below), whose sum is σ = 227915026560. Its totient is φ = 62855104960.

The previous prime is 138781114499. The next prime is 138781114547. The reversal of 138781114538 is 835411187831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29658083 + ... + 29662761.

It is an arithmetic number, because the mean of its divisors is an integer number (7122344580).

Almost surely, 2^138781114538 is an apocalyptic number.

138781114538 is a deficient number, since it is larger than the sum of its proper divisors (89133912022).

138781114538 is a wasteful number, since it uses less digits than its factorization.

138781114538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262.

The product of its digits is 645120, while the sum is 50.

The spelling of 138781114538 in words is "one hundred thirty-eight billion, seven hundred eighty-one million, one hundred fourteen thousand, five hundred thirty-eight".