1165052404421 has 16 divisors (see below), whose sum is σ = 1187845916400. Its totient is φ = 1142487936000.

The previous prime is 1165052404393. The next prime is 1165052404429. The reversal of 1165052404421 is 1244042505611.

It can be written as a sum of positive squares in 8 ways, for example, as 36209903521 + 1128842500900 = 190289^2 + 1062470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165052404421 - 2¹⁰ = 1165052403397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165052404429) by changing a digit.

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, 30156365 + ... + 30194973.

It is an arithmetic number, because the mean of its divisors is an integer number (74240369775).

Almost surely, 2^{1165052404421} is an apocalyptic number.

It is an amenable number.

1165052404421 is a deficient number, since it is larger than the sum of its proper divisors (22793511979).

1165052404421 is a wasteful number, since it uses less digits than its factorization.

1165052404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41560.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 1165052404421 in words is "one trillion, one hundred sixty-five billion, fifty-two million, four hundred four thousand, four hundred twenty-one".