2165261343532 has 24 divisors (see below), whose sum is σ = 4330972032800. Its totient is φ = 927872858880.

The previous prime is 2165261343527. The next prime is 2165261343541. The reversal of 2165261343532 is 2353431625612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3737019 + ... + 4277362.

Almost surely, 2^{2165261343532} is an apocalyptic number.

It is an amenable number.

2165261343532 is an abundant number, since it is smaller than the sum of its proper divisors (2165710689268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165261343532 is a wasteful number, since it uses less digits than its factorization.

2165261343532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024041 (or 8024039 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The spelling of 2165261343532 in words is "two trillion, one hundred sixty-five billion, two hundred sixty-one million, three hundred forty-three thousand, five hundred thirty-two".