21435430545053 has 8 divisors (see below), whose sum is σ = 24613737445440. Its totient is φ = 18286149278880.

The previous prime is 21435430545029. The next prime is 21435430545071. The reversal of 21435430545053 is 35054503453412.

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

It is a de Polignac number, because none of the positive numbers 2^k-21435430545053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21435430544995 and 21435430545013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21435430545013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7256406968 + ... + 7256409921.

It is an arithmetic number, because the mean of its divisors is an integer number (3076717180680).

Almost surely, 2^{21435430545053} is an apocalyptic number.

It is an amenable number.

21435430545053 is a deficient number, since it is larger than the sum of its proper divisors (3178306900387).

21435430545053 is a wasteful number, since it uses less digits than its factorization.

21435430545053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14512817107.

The product of its (nonzero) digits is 2160000, while the sum is 44.

Adding to 21435430545053 its reverse (35054503453412), we get a palindrome (56489933998465).

The spelling of 21435430545053 in words is "twenty-one trillion, four hundred thirty-five billion, four hundred thirty million, five hundred forty-five thousand, fifty-three".