12877937362 has 4 divisors (see below), whose sum is σ = 19316906046. Its totient is φ = 6438968680.

The previous prime is 12877937351. The next prime is 12877937389. The reversal of 12877937362 is 26373977821.

It is a Cunningham number, because it is equal to 113481²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26373977821 = 84503 ⋅312107.

It can be written as a sum of positive squares in only one way, i.e., 12877937361 + 1 = 113481^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219484339 + ... + 3219484342.

Almost surely, 2^12877937362 is an apocalyptic number.

12877937362 is a deficient number, since it is larger than the sum of its proper divisors (6438968684).

12877937362 is an equidigital number, since it uses as much as digits as its factorization.

12877937362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438968683.

The product of its digits is 5334336, while the sum is 55.

The spelling of 12877937362 in words is "twelve billion, eight hundred seventy-seven million, nine hundred thirty-seven thousand, three hundred sixty-two".