20002577671243 has 2 divisors, whose sum is σ = 20002577671244. Its totient is φ = 20002577671242.

The previous prime is 20002577671211. The next prime is 20002577671249. The reversal of 20002577671243 is 34217677520002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20002577671243 - 2⁵ = 20002577671211 is a prime.

It is a super-2 number, since 2×20002577671243² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20002577671193 and 20002577671202.

It is not a weakly prime, because it can be changed into another prime (20002577671249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001288835621 + 10001288835622.

It is an arithmetic number, because the mean of its divisors is an integer number (10001288835622).

Almost surely, 2^{20002577671243} is an apocalyptic number.

20002577671243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002577671243 is an equidigital number, since it uses as much as digits as its factorization.

20002577671243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 20002577671243 in words is "twenty trillion, two billion, five hundred seventy-seven million, six hundred seventy-one thousand, two hundred forty-three".