1165104401421 has 16 divisors (see below), whose sum is σ = 1555269619904. Its totient is φ = 775838093184.

The previous prime is 1165104401371. The next prime is 1165104401429. The reversal of 1165104401421 is 1241044015611.

It is not a de Polignac number, because 1165104401421 - 2²⁹ = 1164567530509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165104401429) 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, 13370625 + ... + 13457481.

It is an arithmetic number, because the mean of its divisors is an integer number (97204351244).

Almost surely, 2^{1165104401421} is an apocalyptic number.

It is an amenable number.

1165104401421 is a deficient number, since it is larger than the sum of its proper divisors (390165218483).

1165104401421 is a wasteful number, since it uses less digits than its factorization.

1165104401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91980.

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 1165104401421 in words is "one trillion, one hundred sixty-five billion, one hundred four million, four hundred one thousand, four hundred twenty-one".