12807887881 has 2 divisors, whose sum is σ = 12807887882. Its totient is φ = 12807887880.

The previous prime is 12807887867. The next prime is 12807887929. The reversal of 12807887881 is 18878870821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12042867600 + 765020281 = 109740^2 + 27659^2 .

It is a cyclic number.

It is not a de Polignac number, because 12807887881 - 2⁵ = 12807887849 is a prime.

It is a super-2 number, since 2×12807887881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12807887681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6403943940 + 6403943941.

It is an arithmetic number, because the mean of its divisors is an integer number (6403943941).

Almost surely, 2^12807887881 is an apocalyptic number.

It is an amenable number.

12807887881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12807887881 is an equidigital number, since it uses as much as digits as its factorization.

12807887881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3211264, while the sum is 58.

The spelling of 12807887881 in words is "twelve billion, eight hundred seven million, eight hundred eighty-seven thousand, eight hundred eighty-one".