21035504411 has 16 divisors (see below), whose sum is σ = 21893836800. Its totient is φ = 20196939168.

The previous prime is 21035504401. The next prime is 21035504419. The reversal of 21035504411 is 11440553012.

It is a cyclic number.

It is not a de Polignac number, because 21035504411 - 2¹⁴ = 21035488027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21035504419) 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, 577580 + ... + 612918.

It is an arithmetic number, because the mean of its divisors is an integer number (1368364800).

Almost surely, 2^21035504411 is an apocalyptic number.

21035504411 is a deficient number, since it is larger than the sum of its proper divisors (858332389).

21035504411 is a wasteful number, since it uses less digits than its factorization.

21035504411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35618.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 21035504411 in words is "twenty-one billion, thirty-five million, five hundred four thousand, four hundred eleven".