138111557552 has 20 divisors (see below), whose sum is σ = 268362309576. Its totient is φ = 68856768000.

The previous prime is 138111557543. The next prime is 138111557557. The reversal of 138111557552 is 255755111831.

It is a happy number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138111557557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12432449 + ... + 12443552.

Almost surely, 2^138111557552 is an apocalyptic number.

It is an amenable number.

138111557552 is a deficient number, since it is larger than the sum of its proper divisors (130250752024).

138111557552 is a wasteful number, since it uses less digits than its factorization.

138111557552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24876356 (or 24876350 counting only the distinct ones).

The product of its digits is 210000, while the sum is 44.

The spelling of 138111557552 in words is "one hundred thirty-eight billion, one hundred eleven million, five hundred fifty-seven thousand, five hundred fifty-two".