117211513509 has 16 divisors (see below), whose sum is σ = 173711275200. Its totient is φ = 78111944208.

The previous prime is 117211513469. The next prime is 117211513519. The reversal of 117211513509 is 905315112711.

117211513509 is a `hidden beast` number, since 11 + 72 + 11 + 513 + 50 + 9 = 666.

It is not a de Polignac number, because 117211513509 - 2⁷ = 117211513381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117211513519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733299 + ... + 878720.

It is an arithmetic number, because the mean of its divisors is an integer number (10856954700).

Almost surely, 2^117211513509 is an apocalyptic number.

It is an amenable number.

117211513509 is a deficient number, since it is larger than the sum of its proper divisors (56499761691).

117211513509 is a wasteful number, since it uses less digits than its factorization.

117211513509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614721 (or 1614715 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 36.

The spelling of 117211513509 in words is "one hundred seventeen billion, two hundred eleven million, five hundred thirteen thousand, five hundred nine".