12117082555 has 16 divisors (see below), whose sum is σ = 14838832800. Its totient is φ = 9496776960.

The previous prime is 12117082543. The next prime is 12117082577. The reversal of 12117082555 is 55528071121.

It is not a de Polignac number, because 12117082555 - 2²¹ = 12114985403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76401 + ... + 173410.

It is an arithmetic number, because the mean of its divisors is an integer number (927427050).

Almost surely, 2^12117082555 is an apocalyptic number.

12117082555 is a deficient number, since it is larger than the sum of its proper divisors (2721750245).

12117082555 is a wasteful number, since it uses less digits than its factorization.

12117082555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250014.

The product of its (nonzero) digits is 28000, while the sum is 37.

The spelling of 12117082555 in words is "twelve billion, one hundred seventeen million, eighty-two thousand, five hundred fifty-five".