1271366695408 has 60 divisors (see below), whose sum is σ = 2483824933512. Its totient is φ = 630420457600.

The previous prime is 1271366695399. The next prime is 1271366695441. The reversal of 1271366695408 is 8045966631721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208383558 + ... + 208389658.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1271366695408 = 2542733390816, but 3⋅1271366695408 = 3814100086224 is not.

Almost surely, 2^{1271366695408} is an apocalyptic number.

It is an amenable number.

1271366695408 is a deficient number, since it is larger than the sum of its proper divisors (1212458238104).

1271366695408 is an equidigital number, since it uses as much as digits as its factorization.

1271366695408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6910 (or 6737 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 58.

It can be divided in two parts, 127136 and 6695408, that added together give a square (6822544 = 2612²).

The spelling of 1271366695408 in words is "one trillion, two hundred seventy-one billion, three hundred sixty-six million, six hundred ninety-five thousand, four hundred eight".