12887791373 has 2 divisors, whose sum is σ = 12887791374. Its totient is φ = 12887791372.

The previous prime is 12887791361. The next prime is 12887791387. The reversal of 12887791373 is 37319778821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7508742409 + 5379048964 = 86653^2 + 73342^2 .

It is a cyclic number.

It is not a de Polignac number, because 12887791373 - 2³² = 8592824077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12887791303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443895686 + 6443895687.

It is an arithmetic number, because the mean of its divisors is an integer number (6443895687).

Almost surely, 2^12887791373 is an apocalyptic number.

It is an amenable number.

12887791373 is a deficient number, since it is larger than the sum of its proper divisors (1).

12887791373 is an equidigital number, since it uses as much as digits as its factorization.

12887791373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 56.

The spelling of 12887791373 in words is "twelve billion, eight hundred eighty-seven million, seven hundred ninety-one thousand, three hundred seventy-three".