117213673509 has 80 divisors (see below), whose sum is σ = 188770222080. Its totient is φ = 72248332320.

The previous prime is 117213673481. The next prime is 117213673513. The reversal of 117213673509 is 905376312711.

117213673509 is a `hidden beast` number, since 1 + 1 + 7 + 2 + 136 + 7 + 3 + 509 = 666.

It is not a de Polignac number, because 117213673509 - 2¹⁵ = 117213640741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117213677509) 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 79 ways as a sum of consecutive naturals, for example, 27701424 + ... + 27705654.

It is an arithmetic number, because the mean of its divisors is an integer number (2359627776).

Almost surely, 2^117213673509 is an apocalyptic number.

117213673509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

117213673509 is a deficient number, since it is larger than the sum of its proper divisors (71556548571).

117213673509 is a wasteful number, since it uses less digits than its factorization.

117213673509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692 (or 4683 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The spelling of 117213673509 in words is "one hundred seventeen billion, two hundred thirteen million, six hundred seventy-three thousand, five hundred nine".