138333717437444 has 12 divisors (see below), whose sum is σ = 242212979426124. Its totient is φ = 69130009029984.

The previous prime is 138333717437387. The next prime is 138333717437453. The reversal of 138333717437444 is 444734717333831.

It can be written as a sum of positive squares in 2 ways, for example, as 112337995477444 + 25995721960000 = 10598962^2 + 5098600^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9212413739 + ... + 9212428754.

It is an arithmetic number, because the mean of its divisors is an integer number (20184414952177).

Almost surely, 2^{138333717437444} is an apocalyptic number.

It is an amenable number.

138333717437444 is a deficient number, since it is larger than the sum of its proper divisors (103879261988680).

138333717437444 is a wasteful number, since it uses less digits than its factorization.

138333717437444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18424844374 (or 18424844372 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 62.

The spelling of 138333717437444 in words is "one hundred thirty-eight trillion, three hundred thirty-three billion, seven hundred seventeen million, four hundred thirty-seven thousand, four hundred forty-four".