2165145166132 has 24 divisors (see below), whose sum is σ = 4080919604832. Its totient is φ = 999186655200.

The previous prime is 2165145166099. The next prime is 2165145166133. The reversal of 2165145166132 is 2316615415612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165145166133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841794 + ... + 2778937.

It is an arithmetic number, because the mean of its divisors is an integer number (170038316868).

Almost surely, 2^{2165145166132} is an apocalyptic number.

It is an amenable number.

2165145166132 is a deficient number, since it is larger than the sum of its proper divisors (1915774438700).

2165145166132 is a wasteful number, since it uses less digits than its factorization.

2165145166132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629759 (or 4629757 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 2165145166132 in words is "two trillion, one hundred sixty-five billion, one hundred forty-five million, one hundred sixty-six thousand, one hundred thirty-two".