2166142553115 has 96 divisors (see below), whose sum is σ = 3659285657664. Its totient is φ = 1094055874560.

The previous prime is 2166142553083. The next prime is 2166142553117. The reversal of 2166142553115 is 5113552416612.

It is not a de Polignac number, because 2166142553115 - 2⁵ = 2166142553083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166142553117) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 334639519 + ... + 334645991.

It is an arithmetic number, because the mean of its divisors is an integer number (38117558934).

Almost surely, 2^{2166142553115} is an apocalyptic number.

2166142553115 is a deficient number, since it is larger than the sum of its proper divisors (1493143104549).

2166142553115 is a wasteful number, since it uses less digits than its factorization.

2166142553115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941 (or 6918 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

Adding to 2166142553115 its reverse (5113552416612), we get a palindrome (7279694969727).

The spelling of 2166142553115 in words is "two trillion, one hundred sixty-six billion, one hundred forty-two million, five hundred fifty-three thousand, one hundred fifteen".