1271640782044 has 12 divisors (see below), whose sum is σ = 2272719695904. Its totient is φ = 622292297504.

The previous prime is 1271640782033. The next prime is 1271640782051. The reversal of 1271640782044 is 4402870461721.

It is a junction number, because it is equal to n+sod(n) for n = 1271640781985 and 1271640782003.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3382023169 + ... + 3382023544.

It is an arithmetic number, because the mean of its divisors is an integer number (189393307992).

Almost surely, 2^{1271640782044} is an apocalyptic number.

It is an amenable number.

1271640782044 is a deficient number, since it is larger than the sum of its proper divisors (1001078913860).

1271640782044 is a wasteful number, since it uses less digits than its factorization.

1271640782044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764046764 (or 6764046762 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 1271640782044 in words is "one trillion, two hundred seventy-one billion, six hundred forty million, seven hundred eighty-two thousand, forty-four".