138494577446 has 8 divisors (see below), whose sum is σ = 208042507704. Its totient is φ = 69147074880.

The previous prime is 138494577427. The next prime is 138494577451. The reversal of 138494577446 is 644775494831.

138494577446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×138494577446⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50105195 + ... + 50107958.

It is an arithmetic number, because the mean of its divisors is an integer number (26005313463).

Almost surely, 2^138494577446 is an apocalyptic number.

138494577446 is a deficient number, since it is larger than the sum of its proper divisors (69547930258).

138494577446 is a wasteful number, since it uses less digits than its factorization.

138494577446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100213846.

The product of its digits is 81285120, while the sum is 62.

The spelling of 138494577446 in words is "one hundred thirty-eight billion, four hundred ninety-four million, five hundred seventy-seven thousand, four hundred forty-six".