1271581608957 has 24 divisors (see below), whose sum is σ = 1863653604960. Its totient is φ = 770627220000.

The previous prime is 1271581608917. The next prime is 1271581608971. The reversal of 1271581608957 is 7598061851721.

It is not a de Polignac number, because 1271581608957 - 2¹⁵ = 1271581576189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1271581608957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271581608917) 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 in 23 ways as a sum of consecutive naturals, for example, 14162707 + ... + 14252207.

It is an arithmetic number, because the mean of its divisors is an integer number (77652233540).

Almost surely, 2^{1271581608957} is an apocalyptic number.

It is an amenable number.

1271581608957 is a deficient number, since it is larger than the sum of its proper divisors (592071996003).

1271581608957 is a wasteful number, since it uses less digits than its factorization.

1271581608957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128665 (or 128654 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 60.

The spelling of 1271581608957 in words is "one trillion, two hundred seventy-one billion, five hundred eighty-one million, six hundred eight thousand, nine hundred fifty-seven".