138153306444 has 48 divisors (see below), whose sum is σ = 333182965248. Its totient is φ = 44528248768.

The previous prime is 138153306437. The next prime is 138153306457. The reversal of 138153306444 is 444603351831.

It is a junction number, because it is equal to n+sod(n) for n = 138153306396 and 138153306405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428807 + ... + 1522430.

It is an arithmetic number, because the mean of its divisors is an integer number (6941311776).

Almost surely, 2^138153306444 is an apocalyptic number.

It is an amenable number.

138153306444 is an abundant number, since it is smaller than the sum of its proper divisors (195029658804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138153306444 is a wasteful number, since it uses less digits than its factorization.

138153306444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951374 (or 2951372 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 138153306444 in words is "one hundred thirty-eight billion, one hundred fifty-three million, three hundred six thousand, four hundred forty-four".