20986077760541 has 2 divisors, whose sum is σ = 20986077760542. Its totient is φ = 20986077760540.

The previous prime is 20986077760507. The next prime is 20986077760561. The reversal of 20986077760541 is 14506777068902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12753505152025 + 8232572608516 = 3571205^2 + 2869246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20986077760541 is a prime.

It is a super-2 number, since 2×20986077760541² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20986077760561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10493038880270 + 10493038880271.

It is an arithmetic number, because the mean of its divisors is an integer number (10493038880271).

Almost surely, 2^{20986077760541} is an apocalyptic number.

It is an amenable number.

20986077760541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20986077760541 is an equidigital number, since it uses as much as digits as its factorization.

20986077760541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 20986077760541 in words is "twenty trillion, nine hundred eighty-six billion, seventy-seven million, seven hundred sixty thousand, five hundred forty-one".