20345002656241 has 2 divisors, whose sum is σ = 20345002656242. Its totient is φ = 20345002656240.

The previous prime is 20345002656233. The next prime is 20345002656269. The reversal of 20345002656241 is 14265620054302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14327322671025 + 6017679985216 = 3785145^2 + 2453096^2 .

It is a cyclic number.

It is not a de Polignac number, because 20345002656241 - 2³ = 20345002656233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20345002656194 and 20345002656203.

It is not a weakly prime, because it can be changed into another prime (20345002656271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172501328120 + 10172501328121.

It is an arithmetic number, because the mean of its divisors is an integer number (10172501328121).

Almost surely, 2^{20345002656241} is an apocalyptic number.

It is an amenable number.

20345002656241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345002656241 is an equidigital number, since it uses as much as digits as its factorization.

20345002656241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 20345002656241 in words is "twenty trillion, three hundred forty-five billion, two million, six hundred fifty-six thousand, two hundred forty-one".