138147989544458 has 16 divisors (see below), whose sum is σ = 208574579124000. Its totient is φ = 68623851800112.

The previous prime is 138147989544457. The next prime is 138147989544491. The reversal of 138147989544458 is 854445989741831.

It is not an unprimeable number, because it can be changed into a prime (138147989544457) 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, 180107588 + ... + 180872991.

It is an arithmetic number, because the mean of its divisors is an integer number (13035911195250).

Almost surely, 2^{138147989544458} is an apocalyptic number.

138147989544458 is a deficient number, since it is larger than the sum of its proper divisors (70426589579542).

138147989544458 is a wasteful number, since it uses less digits than its factorization.

138147989544458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360981829.

The product of its digits is 5573836800, while the sum is 80.

The spelling of 138147989544458 in words is "one hundred thirty-eight trillion, one hundred forty-seven billion, nine hundred eighty-nine million, five hundred forty-four thousand, four hundred fifty-eight".