20880576671 has 2 divisors, whose sum is σ = 20880576672. Its totient is φ = 20880576670.

The previous prime is 20880576649. The next prime is 20880576763. The reversal of 20880576671 is 17667508802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20880576671 - 2¹⁰ = 20880575647 is a prime.

It is a super-2 number, since 2×20880576671² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20880576601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10440288335 + 10440288336.

It is an arithmetic number, because the mean of its divisors is an integer number (10440288336).

Almost surely, 2^20880576671 is an apocalyptic number.

20880576671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20880576671 is an equidigital number, since it uses as much as digits as its factorization.

20880576671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 20880576671 in words is "twenty billion, eight hundred eighty million, five hundred seventy-six thousand, six hundred seventy-one".