2165560655612 has 12 divisors (see below), whose sum is σ = 3790293719520. Its totient is φ = 1082619592896.

The previous prime is 2165560655603. The next prime is 2165560655639.

2165560655612 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40153412 + ... + 40207307.

It is an arithmetic number, because the mean of its divisors is an integer number (315857809960).

Almost surely, 2^{2165560655612} is an apocalyptic number.

It is an amenable number.

2165560655612 is a deficient number, since it is larger than the sum of its proper divisors (1624733063908).

2165560655612 is a wasteful number, since it uses less digits than its factorization.

2165560655612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80367460 (or 80367458 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 50.

The spelling of 2165560655612 in words is "two trillion, one hundred sixty-five billion, five hundred sixty million, six hundred fifty-five thousand, six hundred twelve".