11421069965 has 16 divisors (see below), whose sum is σ = 14545037808. Its totient is φ = 8579506176.

The previous prime is 11421069901. The next prime is 11421069967. The reversal of 11421069965 is 56996012411.

It can be written as a sum of positive squares in 8 ways, for example, as 609645481 + 10811424484 = 24691^2 + 103978^2 .

It is a cyclic number.

It is not a de Polignac number, because 11421069965 - 2⁶ = 11421069901 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 (11421069967) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 118352 + ... + 191961.

It is an arithmetic number, because the mean of its divisors is an integer number (909064863).

Almost surely, 2^11421069965 is an apocalyptic number.

It is an amenable number.

11421069965 is a deficient number, since it is larger than the sum of its proper divisors (3123967843).

11421069965 is a wasteful number, since it uses less digits than its factorization.

11421069965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310768.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 11421069965 in words is "eleven billion, four hundred twenty-one million, sixty-nine thousand, nine hundred sixty-five".