20651775095879 has 2 divisors, whose sum is σ = 20651775095880. Its totient is φ = 20651775095878.

The previous prime is 20651775095873. The next prime is 20651775095921. The reversal of 20651775095879 is 97859057715602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20651775095879 - 2⁴ = 20651775095863 is a prime.

It is a super-2 number, since 2×20651775095879² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20651775095873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10325887547939 + 10325887547940.

It is an arithmetic number, because the mean of its divisors is an integer number (10325887547940).

Almost surely, 2^{20651775095879} is an apocalyptic number.

20651775095879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20651775095879 is an equidigital number, since it uses as much as digits as its factorization.

20651775095879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396000, while the sum is 71.

The spelling of 20651775095879 in words is "twenty trillion, six hundred fifty-one billion, seven hundred seventy-five million, ninety-five thousand, eight hundred seventy-nine".