138854558841044 has 6 divisors (see below), whose sum is σ = 242995477971834. Its totient is φ = 69427279420520.

The previous prime is 138854558840993. The next prime is 138854558841067. The reversal of 138854558841044 is 440148855458831.

It can be written as a sum of positive squares in only one way, i.e., 136703144608144 + 2151414232900 = 11692012^2 + 1466770^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17356819855127 + ... + 17356819855134.

It is an arithmetic number, because the mean of its divisors is an integer number (40499246328639).

Almost surely, 2^{138854558841044} is an apocalyptic number.

It is an amenable number.

138854558841044 is a deficient number, since it is larger than the sum of its proper divisors (104140919130790).

138854558841044 is a wasteful number, since it uses less digits than its factorization.

138854558841044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34713639710265 (or 34713639710263 counting only the distinct ones).

The product of its (nonzero) digits is 393216000, while the sum is 68.

The spelling of 138854558841044 in words is "one hundred thirty-eight trillion, eight hundred fifty-four billion, five hundred fifty-eight million, eight hundred forty-one thousand, forty-four".