20540776033919 has 2 divisors, whose sum is σ = 20540776033920. Its totient is φ = 20540776033918.

The previous prime is 20540776033891. The next prime is 20540776033961. The reversal of 20540776033919 is 91933067704502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20540776033919 is a prime.

It is a super-2 number, since 2×20540776033919² (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 (20540776033319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270388016959 + 10270388016960.

It is an arithmetic number, because the mean of its divisors is an integer number (10270388016960).

Almost surely, 2^{20540776033919} is an apocalyptic number.

20540776033919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20540776033919 is an equidigital number, since it uses as much as digits as its factorization.

20540776033919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8573040, while the sum is 56.

The spelling of 20540776033919 in words is "twenty trillion, five hundred forty billion, seven hundred seventy-six million, thirty-three thousand, nine hundred nineteen".