21040414363 has 4 divisors (see below), whose sum is σ = 21149432248. Its totient is φ = 20931396480.

The previous prime is 21040414357. The next prime is 21040414393. The reversal of 21040414363 is 36341404012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21040414363 - 2²¹ = 21038317211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21040414303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54508653 + ... + 54509038.

It is an arithmetic number, because the mean of its divisors is an integer number (5287358062).

Almost surely, 2^21040414363 is an apocalyptic number.

21040414363 is a deficient number, since it is larger than the sum of its proper divisors (109017885).

21040414363 is a wasteful number, since it uses less digits than its factorization.

21040414363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109017884.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21040414363 its reverse (36341404012), we get a palindrome (57381818375).

The spelling of 21040414363 in words is "twenty-one billion, forty million, four hundred fourteen thousand, three hundred sixty-three".