4050968813561 has 2 divisors, whose sum is σ = 4050968813562. Its totient is φ = 4050968813560.

The previous prime is 4050968813519. The next prime is 4050968813569. The reversal of 4050968813561 is 1653188690504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3253910899600 + 797057913961 = 1803860^2 + 892781^2 .

It is a cyclic number.

It is not a de Polignac number, because 4050968813561 - 2⁶ = 4050968813497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4050968813497 and 4050968813506.

It is not a weakly prime, because it can be changed into another prime (4050968813569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025484406780 + 2025484406781.

It is an arithmetic number, because the mean of its divisors is an integer number (2025484406781).

Almost surely, 2^{4050968813561} is an apocalyptic number.

It is an amenable number.

4050968813561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4050968813561 is an equidigital number, since it uses as much as digits as its factorization.

4050968813561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 4050968813561 in words is "four trillion, fifty billion, nine hundred sixty-eight million, eight hundred thirteen thousand, five hundred sixty-one".