1115616516555 has 16 divisors (see below), whose sum is σ = 1809438297120. Its totient is φ = 586844851968.

The previous prime is 1115616516529. The next prime is 1115616516569. The reversal of 1115616516555 is 5556156165111.

It is not a de Polignac number, because 1115616516555 - 2⁵ = 1115616516523 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, 509412840 + ... + 509415029.

It is an arithmetic number, because the mean of its divisors is an integer number (113089893570).

Almost surely, 2^{1115616516555} is an apocalyptic number.

1115616516555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1115616516555 is a deficient number, since it is larger than the sum of its proper divisors (693821780565).

1115616516555 is a wasteful number, since it uses less digits than its factorization.

1115616516555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018827950.

The product of its digits is 675000, while the sum is 48.

The spelling of 1115616516555 in words is "one trillion, one hundred fifteen billion, six hundred sixteen million, five hundred sixteen thousand, five hundred fifty-five".