117115615 has 4 divisors (see below), whose sum is σ = 140538744. Its totient is φ = 93692488.

The previous prime is 117115591. The next prime is 117115627. The reversal of 117115615 is 516511711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 516511711 = 97 ⋅5324863.

It is a cyclic number.

It is not a de Polignac number, because 117115615 - 2¹⁹ = 116591327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11711557 + ... + 11711566.

It is an arithmetic number, because the mean of its divisors is an integer number (35134686).

Almost surely, 2^117115615 is an apocalyptic number.

117115615 is a deficient number, since it is larger than the sum of its proper divisors (23423129).

117115615 is an equidigital number, since it uses as much as digits as its factorization.

117115615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23423128.

The product of its digits is 1050, while the sum is 28.

The square root of 117115615 is about 10821.9968120491. The cubic root of 117115615 is about 489.2583741424.

The spelling of 117115615 in words is "one hundred seventeen million, one hundred fifteen thousand, six hundred fifteen".