20345214461 has 16 divisors (see below), whose sum is σ = 24004693440. Its totient is φ = 16999605120.

The previous prime is 20345214433. The next prime is 20345214469. The reversal of 20345214461 is 16441254302.

It is a cyclic number.

It is not a de Polignac number, because 20345214461 - 2¹⁴ = 20345198077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345214469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271991 + ... + 338628.

It is an arithmetic number, because the mean of its divisors is an integer number (1500293340).

Almost surely, 2^20345214461 is an apocalyptic number.

It is an amenable number.

20345214461 is a deficient number, since it is larger than the sum of its proper divisors (3659478979).

20345214461 is a wasteful number, since it uses less digits than its factorization.

20345214461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610876.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 20345214461 its reverse (16441254302), we get a palindrome (36786468763).

The spelling of 20345214461 in words is "twenty billion, three hundred forty-five million, two hundred fourteen thousand, four hundred sixty-one".