20345861196049 has 2 divisors, whose sum is σ = 20345861196050. Its totient is φ = 20345861196048.

The previous prime is 20345861195987. The next prime is 20345861196061. The reversal of 20345861196049 is 94069116854302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14085196650625 + 6260664545424 = 3753025^2 + 2502132^2 .

It is a cyclic number.

It is not a de Polignac number, because 20345861196049 - 2¹⁵ = 20345861163281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20345861195984 and 20345861196002.

It is not a weakly prime, because it can be changed into another prime (20345861196079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172930598024 + 10172930598025.

It is an arithmetic number, because the mean of its divisors is an integer number (10172930598025).

Almost surely, 2^{20345861196049} is an apocalyptic number.

It is an amenable number.

20345861196049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345861196049 is an equidigital number, since it uses as much as digits as its factorization.

20345861196049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 20345861196049 in words is "twenty trillion, three hundred forty-five billion, eight hundred sixty-one million, one hundred ninety-six thousand, forty-nine".