20432203541405 has 16 divisors (see below), whose sum is σ = 25961042317680. Its totient is φ = 15384173371392.

The previous prime is 20432203541389. The next prime is 20432203541413. The reversal of 20432203541405 is 50414530223402.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3751399543609 + 16680803997796 = 1936853^2 + 4084214^2 .

It is a cyclic number.

It is not a de Polignac number, because 20432203541405 - 2⁴ = 20432203541389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22658117 + ... + 23542613.

It is an arithmetic number, because the mean of its divisors is an integer number (1622565144855).

Almost surely, 2^{20432203541405} is an apocalyptic number.

It is an amenable number.

20432203541405 is a deficient number, since it is larger than the sum of its proper divisors (5528838776275).

20432203541405 is a wasteful number, since it uses less digits than its factorization.

20432203541405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156288.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 20432203541405 its reverse (50414530223402), we get a palindrome (70846733764807).

The spelling of 20432203541405 in words is "twenty trillion, four hundred thirty-two billion, two hundred three million, five hundred forty-one thousand, four hundred five".