404021125553011 has 4 divisors (see below), whose sum is σ = 404021522700432. Its totient is φ = 404020728405592.

The previous prime is 404021125553009. The next prime is 404021125553021. The reversal of 404021125553011 is 110355521120404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404021125553011 - 2¹ = 404021125553009 is a prime.

It is a super-2 number, since 2×404021125553011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404021125553021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197043820 + ... + 199083673.

It is an arithmetic number, because the mean of its divisors is an integer number (101005380675108).

Almost surely, 2^{404021125553011} is an apocalyptic number.

404021125553011 is a deficient number, since it is larger than the sum of its proper divisors (397147421).

404021125553011 is a wasteful number, since it uses less digits than its factorization.

404021125553011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397147420.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 404021125553011 its reverse (110355521120404), we get a palindrome (514376646673415).

The spelling of 404021125553011 in words is "four hundred four trillion, twenty-one billion, one hundred twenty-five million, five hundred fifty-three thousand, eleven".