117215545447 has 16 divisors (see below), whose sum is σ = 157380314112. Its totient is φ = 84310881120.

The previous prime is 117215545441. The next prime is 117215545511. The reversal of 117215545447 is 744545512711.

It is a cyclic number.

It is not a de Polignac number, because 117215545447 - 2⁷ = 117215545319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117215545397 and 117215545406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117215545441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58548223 + ... + 58550224.

It is an arithmetic number, because the mean of its divisors is an integer number (9836269632).

Almost surely, 2^117215545447 is an apocalyptic number.

117215545447 is a deficient number, since it is larger than the sum of its proper divisors (40164768665).

117215545447 is a wasteful number, since it uses less digits than its factorization.

117215545447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117098478.

The product of its digits is 784000, while the sum is 46.

The spelling of 117215545447 in words is "one hundred seventeen billion, two hundred fifteen million, five hundred forty-five thousand, four hundred forty-seven".