12771620882 has 4 divisors (see below), whose sum is σ = 19157431326. Its totient is φ = 6385810440.

The previous prime is 12771620881. The next prime is 12771620893. The reversal of 12771620882 is 28802617721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8788875001 + 3982745881 = 93749^2 + 63109^2 .

It is a super-2 number, since 2×12771620882² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12771620881) 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, 3192905219 + ... + 3192905222.

Almost surely, 2^12771620882 is an apocalyptic number.

12771620882 is a deficient number, since it is larger than the sum of its proper divisors (6385810444).

12771620882 is an equidigital number, since it uses as much as digits as its factorization.

12771620882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6385810443.

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 12771620882 in words is "twelve billion, seven hundred seventy-one million, six hundred twenty thousand, eight hundred eighty-two".