1271573205105 has 16 divisors (see below), whose sum is σ = 2325162432384. Its totient is φ = 581290608000.

The previous prime is 1271573205083. The next prime is 1271573205107. The reversal of 1271573205105 is 5015023751721.

It is a happy number.

It is not a de Polignac number, because 1271573205105 - 2⁶ = 1271573205041 is a prime.

It is a super-2 number, since 2×1271573205105² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1271573205107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6055110396 + ... + 6055110605.

It is an arithmetic number, because the mean of its divisors is an integer number (145322652024).

Almost surely, 2^{1271573205105} is an apocalyptic number.

1271573205105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1271573205105 is a deficient number, since it is larger than the sum of its proper divisors (1053589227279).

1271573205105 is a wasteful number, since it uses less digits than its factorization.

1271573205105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12110221016.

The product of its (nonzero) digits is 73500, while the sum is 39.

Adding to 1271573205105 its reverse (5015023751721), we get a palindrome (6286596956826).

The spelling of 1271573205105 in words is "one trillion, two hundred seventy-one billion, five hundred seventy-three million, two hundred five thousand, one hundred five".