138944450822 has 4 divisors (see below), whose sum is σ = 208416676236. Its totient is φ = 69472225410.

The previous prime is 138944450807. The next prime is 138944450839. The reversal of 138944450822 is 228054449831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34736112704 + ... + 34736112707.

It is an arithmetic number, because the mean of its divisors is an integer number (52104169059).

Almost surely, 2^138944450822 is an apocalyptic number.

138944450822 is a deficient number, since it is larger than the sum of its proper divisors (69472225414).

138944450822 is an equidigital number, since it uses as much as digits as its factorization.

138944450822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69472225413.

The product of its (nonzero) digits is 2211840, while the sum is 50.

The spelling of 138944450822 in words is "one hundred thirty-eight billion, nine hundred forty-four million, four hundred fifty thousand, eight hundred twenty-two".