138111100494784 has 28 divisors (see below), whose sum is σ = 274112154237384. Its totient is φ = 69043471080704.

The previous prime is 138111100494761. The next prime is 138111100494811. The reversal of 138111100494784 is 487494001111831.

It is a happy number.

It is a super-3 number, since 3×138111100494784³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 188368234 + ... + 189100009.

Almost surely, 2^{138111100494784} is an apocalyptic number.

It is an amenable number.

138111100494784 is a deficient number, since it is larger than the sum of its proper divisors (136001053742600).

138111100494784 is an equidigital number, since it uses as much as digits as its factorization.

138111100494784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377473972 (or 377473962 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 138111100494784 in words is "one hundred thirty-eight trillion, one hundred eleven billion, one hundred million, four hundred ninety-four thousand, seven hundred eighty-four".