2111511161155 has 32 divisors (see below), whose sum is σ = 2860398878400. Its totient is φ = 1482212659200.

The previous prime is 2111511161141. The next prime is 2111511161167. The reversal of 2111511161155 is 5511611151112.

It is not a de Polignac number, because 2111511161155 - 2⁷ = 2111511161027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4765911 + ... + 5190079.

It is an arithmetic number, because the mean of its divisors is an integer number (89387464950).

Almost surely, 2^{2111511161155} is an apocalyptic number.

2111511161155 is a deficient number, since it is larger than the sum of its proper divisors (748887717245).

2111511161155 is a wasteful number, since it uses less digits than its factorization.

2111511161155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427335.

The product of its digits is 1500, while the sum is 31.

The spelling of 2111511161155 in words is "two trillion, one hundred eleven billion, five hundred eleven million, one hundred sixty-one thousand, one hundred fifty-five".