20345014404361 has 16 divisors (see below), whose sum is σ = 21473070666768. Its totient is φ = 19255960396800.

The previous prime is 20345014404343. The next prime is 20345014404391. The reversal of 20345014404361 is 16340441054302.

It can be written as a sum of positive squares in 8 ways, for example, as 8038557505225 + 12306456899136 = 2835235^2 + 3508056^2 .

It is a cyclic number.

It is not a de Polignac number, because 20345014404361 - 2⁵ = 20345014404329 is a prime.

It is a super-2 number, since 2×20345014404361² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20345014404361.

It is not an unprimeable number, because it can be changed into a prime (20345014404391) 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, 55534906 + ... + 55900051.

It is an arithmetic number, because the mean of its divisors is an integer number (1342066916673).

Almost surely, 2^{20345014404361} is an apocalyptic number.

It is an amenable number.

20345014404361 is a deficient number, since it is larger than the sum of its proper divisors (1128056262407).

20345014404361 is a wasteful number, since it uses less digits than its factorization.

20345014404361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111435132.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 20345014404361 its reverse (16340441054302), we get a palindrome (36685455458663).

The spelling of 20345014404361 in words is "twenty trillion, three hundred forty-five billion, fourteen million, four hundred four thousand, three hundred sixty-one".