138669364293392 has 20 divisors (see below), whose sum is σ = 275224866327516. Its totient is φ = 67643592337920.

The previous prime is 138669364293371. The next prime is 138669364293403. The reversal of 138669364293392 is 293392463966831.

It can be written as a sum of positive squares in 2 ways, for example, as 29058180238096 + 109611184055296 = 5390564^2 + 10469536^2 .

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, 105693112373 + ... + 105693113684.

Almost surely, 2^{138669364293392} is an apocalyptic number.

It is an amenable number.

138669364293392 is a deficient number, since it is larger than the sum of its proper divisors (136555502034124).

138669364293392 is a wasteful number, since it uses less digits than its factorization.

138669364293392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211386226106 (or 211386226100 counting only the distinct ones).

The product of its digits is 1632586752, while the sum is 74.

The spelling of 138669364293392 in words is "one hundred thirty-eight trillion, six hundred sixty-nine billion, three hundred sixty-four million, two hundred ninety-three thousand, three hundred ninety-two".