21454050435 has 16 divisors (see below), whose sum is σ = 34436862720. Its totient is φ = 11405366240.

The previous prime is 21454050427. The next prime is 21454050509. The reversal of 21454050435 is 53405045412.

It is not a de Polignac number, because 21454050435 - 2³ = 21454050427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21454050396 and 21454050405.

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, 2294805 + ... + 2304134.

It is an arithmetic number, because the mean of its divisors is an integer number (2152303920).

Almost surely, 2^21454050435 is an apocalyptic number.

21454050435 is a deficient number, since it is larger than the sum of its proper divisors (12982812285).

21454050435 is a wasteful number, since it uses less digits than its factorization.

21454050435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599258.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 21454050435 its reverse (53405045412), we get a palindrome (74859095847).

The spelling of 21454050435 in words is "twenty-one billion, four hundred fifty-four million, fifty thousand, four hundred thirty-five".