117618555 has 16 divisors (see below), whose sum is σ = 188328960. Its totient is φ = 62683488.

The previous prime is 117618551. The next prime is 117618583. The reversal of 117618555 is 555816711.

It is not a de Polignac number, because 117618555 - 2² = 117618551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117618551) 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, 30316 + ... + 33974.

It is an arithmetic number, because the mean of its divisors is an integer number (11770560).

Almost surely, 2^117618555 is an apocalyptic number.

117618555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

117618555 is a deficient number, since it is larger than the sum of its proper divisors (70710405).

117618555 is a wasteful number, since it uses less digits than its factorization.

117618555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810.

The product of its digits is 42000, while the sum is 39.

The square root of 117618555 is about 10845.2088499945. The cubic root of 117618555 is about 489.9577292426.

The spelling of 117618555 in words is "one hundred seventeen million, six hundred eighteen thousand, five hundred fifty-five".