139344256505217 has 8 divisors (see below), whose sum is σ = 185821660691296. Its totient is φ = 92881511661312.

The previous prime is 139344256505183. The next prime is 139344256505219. The reversal of 139344256505217 is 712505652443931.

It is a happy number.

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

It is not a de Polignac number, because 139344256505217 - 2⁷ = 139344256505089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139344256505219) 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, 3664813363 + ... + 3664851384.

It is an arithmetic number, because the mean of its divisors is an integer number (23227707586412).

Almost surely, 2^{139344256505217} is an apocalyptic number.

It is an amenable number.

139344256505217 is a deficient number, since it is larger than the sum of its proper divisors (46477404186079).

139344256505217 is an equidigital number, since it uses as much as digits as its factorization.

139344256505217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329671087.

The product of its (nonzero) digits is 27216000, while the sum is 57.

The spelling of 139344256505217 in words is "one hundred thirty-nine trillion, three hundred forty-four billion, two hundred fifty-six million, five hundred five thousand, two hundred seventeen".