138545681734 has 16 divisors (see below), whose sum is σ = 219060633600. Its totient is φ = 65535613704.

The previous prime is 138545681731. The next prime is 138545681741. The reversal of 138545681734 is 437186545831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138545681731) 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, 2508102 + ... + 2562745.

It is an arithmetic number, because the mean of its divisors is an integer number (13691289600).

Almost surely, 2^138545681734 is an apocalyptic number.

138545681734 is a deficient number, since it is larger than the sum of its proper divisors (80514951866).

138545681734 is a wasteful number, since it uses less digits than its factorization.

138545681734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071587.

The product of its digits is 9676800, while the sum is 55.

The spelling of 138545681734 in words is "one hundred thirty-eight billion, five hundred forty-five million, six hundred eighty-one thousand, seven hundred thirty-four".