117520571345 has 8 divisors (see below), whose sum is σ = 149320255464. Its totient is φ = 88486077184.

The previous prime is 117520571341. The next prime is 117520571407. The reversal of 117520571345 is 543175025711.

It can be written as a sum of positive squares in 4 ways, for example, as 4053996241 + 113466575104 = 63671^2 + 336848^2 .

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 117520571345 - 2² = 117520571341 is a prime.

It is a super-2 number, since 2×117520571345² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117520571341) 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, 691297394 + ... + 691297563.

It is an arithmetic number, because the mean of its divisors is an integer number (18665031933).

Almost surely, 2^117520571345 is an apocalyptic number.

It is an amenable number.

117520571345 is a deficient number, since it is larger than the sum of its proper divisors (31799684119).

117520571345 is a wasteful number, since it uses less digits than its factorization.

117520571345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382594979.

The product of its (nonzero) digits is 147000, while the sum is 41.

The spelling of 117520571345 in words is "one hundred seventeen billion, five hundred twenty million, five hundred seventy-one thousand, three hundred forty-five".