1271405255575 has 48 divisors (see below), whose sum is σ = 1949556775936. Its totient is φ = 800943292800.

The previous prime is 1271405255543. The next prime is 1271405255587. The reversal of 1271405255575 is 5755525041721.

It is not a de Polignac number, because 1271405255575 - 2⁵ = 1271405255543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 844287 + ... + 1804336.

Almost surely, 2^{1271405255575} is an apocalyptic number.

1271405255575 is a deficient number, since it is larger than the sum of its proper divisors (678151520361).

1271405255575 is a wasteful number, since it uses less digits than its factorization.

1271405255575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648864 (or 2648859 counting only the distinct ones).

The product of its (nonzero) digits is 2450000, while the sum is 49.

The spelling of 1271405255575 in words is "one trillion, two hundred seventy-one billion, four hundred five million, two hundred fifty-five thousand, five hundred seventy-five".