647251105117 has 8 divisors (see below), whose sum is σ = 671591993600. Its totient is φ = 623126580480.

The previous prime is 647251105099. The next prime is 647251105129. The reversal of 647251105117 is 711501152746.

It is a happy number.

647251105117 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 cyclic number.

It is not a de Polignac number, because 647251105117 - 2²³ = 647242716509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 647251105117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647251705117) 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, 54084867 + ... + 54096832.

It is an arithmetic number, because the mean of its divisors is an integer number (83948999200).

Almost surely, 2^647251105117 is an apocalyptic number.

It is an amenable number.

647251105117 is a deficient number, since it is larger than the sum of its proper divisors (24340888483).

647251105117 is a wasteful number, since it uses less digits than its factorization.

647251105117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108181923.

The product of its (nonzero) digits is 58800, while the sum is 40.

The spelling of 647251105117 in words is "six hundred forty-seven billion, two hundred fifty-one million, one hundred five thousand, one hundred seventeen".