21455032131411 has 8 divisors (see below), whose sum is σ = 28614009016320. Its totient is φ = 14299705000392.

The previous prime is 21455032131389. The next prime is 21455032131419. The reversal of 21455032131411 is 11413123055412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21455032131411 - 2¹⁰ = 21455032130387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21455032131419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912424755 + ... + 912448268.

It is an arithmetic number, because the mean of its divisors is an integer number (3576751127040).

Almost surely, 2^{21455032131411} is an apocalyptic number.

21455032131411 is a deficient number, since it is larger than the sum of its proper divisors (7158976884909).

21455032131411 is a wasteful number, since it uses less digits than its factorization.

21455032131411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824876945.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 21455032131411 its reverse (11413123055412), we get a palindrome (32868155186823).

The spelling of 21455032131411 in words is "twenty-one trillion, four hundred fifty-five billion, thirty-two million, one hundred thirty-one thousand, four hundred eleven".