1271806327355 has 16 divisors (see below), whose sum is σ = 1566545056128. Its totient is φ = 990857040000.

The previous prime is 1271806327339. The next prime is 1271806327369. The reversal of 1271806327355 is 5537236081721.

It is not a de Polignac number, because 1271806327355 - 2⁴ = 1271806327339 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 20612051 + ... + 20673660.

It is an arithmetic number, because the mean of its divisors is an integer number (97909066008).

Almost surely, 2^{1271806327355} is an apocalyptic number.

1271806327355 is a deficient number, since it is larger than the sum of its proper divisors (294738728773).

1271806327355 is a wasteful number, since it uses less digits than its factorization.

1271806327355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41285878.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 1271806327355 in words is "one trillion, two hundred seventy-one billion, eight hundred six million, three hundred twenty-seven thousand, three hundred fifty-five".