1270134052561 has 12 divisors (see below), whose sum is σ = 1397726926596. Its totient is φ = 1153319889920.

The previous prime is 1270134052507. The next prime is 1270134052633. The reversal of 1270134052561 is 1652504310721.

It can be written as a sum of positive squares in 2 ways, for example, as 1210096801936 + 60037250625 = 1100044^2 + 245025^2 .

It is not a de Polignac number, because 1270134052561 - 2¹⁵ = 1270134019793 is a prime.

It is a super-2 number, since 2×1270134052561² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1270134052561.

It is not an unprimeable number, because it can be changed into a prime (1270134052861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6020560 + ... + 6227953.

It is an arithmetic number, because the mean of its divisors is an integer number (116477243883).

Almost surely, 2^{1270134052561} is an apocalyptic number.

1270134052561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1270134052561 is a deficient number, since it is larger than the sum of its proper divisors (127592874035).

1270134052561 is a wasteful number, since it uses less digits than its factorization.

1270134052561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12249392 (or 12249381 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 1270134052561 in words is "one trillion, two hundred seventy billion, one hundred thirty-four million, fifty-two thousand, five hundred sixty-one".