20345030521433 has 8 divisors (see below), whose sum is σ = 21357276437760. Its totient is φ = 19355031768240.

The previous prime is 20345030521411. The next prime is 20345030521481. The reversal of 20345030521433 is 33412503054302.

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

It is a cyclic number.

It is not a de Polignac number, because 20345030521433 - 2⁴⁴ = 2752844477017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20345030521393 and 20345030521402.

It is not an unprimeable number, because it can be changed into a prime (20345030521733) 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, 5561788910 + ... + 5561792567.

It is an arithmetic number, because the mean of its divisors is an integer number (2669659554720).

Almost surely, 2^{20345030521433} is an apocalyptic number.

It is an amenable number.

20345030521433 is a deficient number, since it is larger than the sum of its proper divisors (1012245916327).

20345030521433 is a wasteful number, since it uses less digits than its factorization.

20345030521433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123581567.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 20345030521433 its reverse (33412503054302), we get a palindrome (53757533575735).

The spelling of 20345030521433 in words is "twenty trillion, three hundred forty-five billion, thirty million, five hundred twenty-one thousand, four hundred thirty-three".