20006869541 has 2 divisors, whose sum is σ = 20006869542. Its totient is φ = 20006869540.

The previous prime is 20006869457. The next prime is 20006869627. The reversal of 20006869541 is 14596860002.

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., 14570904100 + 5435965441 = 120710^2 + 73729^2 .

It is a cyclic number.

It is not a de Polignac number, because 20006869541 - 2¹⁰ = 20006868517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20006869241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003434770 + 10003434771.

It is an arithmetic number, because the mean of its divisors is an integer number (10003434771).

Almost surely, 2^20006869541 is an apocalyptic number.

It is an amenable number.

20006869541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20006869541 is an equidigital number, since it uses as much as digits as its factorization.

20006869541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 20006869541 in words is "twenty billion, six million, eight hundred sixty-nine thousand, five hundred forty-one".