2165436615552 has 128 divisors (see below), whose sum is σ = 6617766528000. Its totient is φ = 614543738880.

The previous prime is 2165436615533. The next prime is 2165436615577. The reversal of 2165436615552 is 2555166345612.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 2165436615495 and 2165436615504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2302824 + ... + 3103847.

It is an arithmetic number, because the mean of its divisors is an integer number (51701301000).

Almost surely, 2^{2165436615552} is an apocalyptic number.

It is an amenable number.

2165436615552 is an abundant number, since it is smaller than the sum of its proper divisors (4452329912448).

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

2165436615552 is a wasteful number, since it uses less digits than its factorization.

2165436615552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406844 (or 5406832 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 51.

The spelling of 2165436615552 in words is "two trillion, one hundred sixty-five billion, four hundred thirty-six million, six hundred fifteen thousand, five hundred fifty-two".