138217450719 has 8 divisors (see below), whose sum is σ = 185080879152. Its totient is φ = 91749494720.

The previous prime is 138217450697. The next prime is 138217450729. The reversal of 138217450719 is 917054712831.

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

It is a cyclic number.

It is not a de Polignac number, because 138217450719 - 2⁵ = 138217450687 is a prime.

It is a super-2 number, since 2×138217450719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138217450729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98867292 + ... + 98868689.

It is an arithmetic number, because the mean of its divisors is an integer number (23135109894).

Almost surely, 2^138217450719 is an apocalyptic number.

138217450719 is a deficient number, since it is larger than the sum of its proper divisors (46863428433).

138217450719 is a wasteful number, since it uses less digits than its factorization.

138217450719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197736217.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 138217450719 in words is "one hundred thirty-eight billion, two hundred seventeen million, four hundred fifty thousand, seven hundred nineteen".