20411035552405 has 16 divisors (see below), whose sum is σ = 24646230120960. Its totient is φ = 16227117389952.

The previous prime is 20411035552399. The next prime is 20411035552409. The reversal of 20411035552405 is 50425553011402.

It is a cyclic number.

It is not a de Polignac number, because 20411035552405 - 2¹⁷ = 20411035421333 is a prime.

It is a super-2 number, since 2×20411035552405² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411035552409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16954344 + ... + 18118273.

It is an arithmetic number, because the mean of its divisors is an integer number (1540389382560).

Almost surely, 2^{20411035552405} is an apocalyptic number.

It is an amenable number.

20411035552405 is a deficient number, since it is larger than the sum of its proper divisors (4235194568555).

20411035552405 is a wasteful number, since it uses less digits than its factorization.

20411035552405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35073348.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 20411035552405 its reverse (50425553011402), we get a palindrome (70836588563807).

The spelling of 20411035552405 in words is "twenty trillion, four hundred eleven billion, thirty-five million, five hundred fifty-two thousand, four hundred five".