20835465612893 has 2 divisors, whose sum is σ = 20835465612894. Its totient is φ = 20835465612892.

The previous prime is 20835465612877. The next prime is 20835465612919. The reversal of 20835465612893 is 39821656453802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19290384294724 + 1545081318169 = 4392082^2 + 1243013^2 .

It is a cyclic number.

It is not a de Polignac number, because 20835465612893 - 2⁴ = 20835465612877 is a prime.

It is a super-2 number, since 2×20835465612893² (a number of 27 digits) contains 22 as substring.

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 (20835465632893) 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, 10417732806446 + 10417732806447.

It is an arithmetic number, because the mean of its divisors is an integer number (10417732806447).

Almost surely, 2^{20835465612893} is an apocalyptic number.

It is an amenable number.

20835465612893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20835465612893 is an equidigital number, since it uses as much as digits as its factorization.

20835465612893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74649600, while the sum is 62.

The spelling of 20835465612893 in words is "twenty trillion, eight hundred thirty-five billion, four hundred sixty-five million, six hundred twelve thousand, eight hundred ninety-three".