21450403115135 has 16 divisors (see below), whose sum is σ = 26907161456640. Its totient is φ = 16396551493920.

The previous prime is 21450403115093. The next prime is 21450403115147. The reversal of 21450403115135 is 53151130405412.

It is a happy number.

It is not a de Polignac number, because 21450403115135 - 2²⁰ = 21450402066559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21450403115095 and 21450403115104.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 875871917 + ... + 875896406.

It is an arithmetic number, because the mean of its divisors is an integer number (1681697591040).

Almost surely, 2^{21450403115135} is an apocalyptic number.

21450403115135 is a deficient number, since it is larger than the sum of its proper divisors (5456758341505).

21450403115135 is a wasteful number, since it uses less digits than its factorization.

21450403115135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751768438.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 21450403115135 in words is "twenty-one trillion, four hundred fifty billion, four hundred three million, one hundred fifteen thousand, one hundred thirty-five".