20434611353 has 8 divisors (see below), whose sum is σ = 22034984328. Its totient is φ = 18838306944.

The previous prime is 20434611343. The next prime is 20434611361. The reversal of 20434611353 is 35311643402.

It can be written as a sum of positive squares in 4 ways, for example, as 289918729 + 20144692624 = 17027^2 + 141932^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20434611353 is a prime.

It is a super-2 number, since 2×20434611353² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434611343) 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, 1006700 + ... + 1026797.

It is an arithmetic number, because the mean of its divisors is an integer number (2754373041).

Almost surely, 2^20434611353 is an apocalyptic number.

It is an amenable number.

20434611353 is a deficient number, since it is larger than the sum of its proper divisors (1600372975).

20434611353 is a wasteful number, since it uses less digits than its factorization.

20434611353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034283.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 20434611353 in words is "twenty billion, four hundred thirty-four million, six hundred eleven thousand, three hundred fifty-three".