1267542755513 has 16 divisors (see below), whose sum is σ = 1279257477120. Its totient is φ = 1255896018384.

The previous prime is 1267542755477. The next prime is 1267542755519. The reversal of 1267542755513 is 3155572457621.

It is a cyclic number.

It is not a de Polignac number, because 1267542755513 - 2¹⁶ = 1267542689977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1267542755519) 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 15 ways as a sum of consecutive naturals, for example, 40895420 + ... + 40926402.

It is an arithmetic number, because the mean of its divisors is an integer number (79953592320).

Almost surely, 2^{1267542755513} is an apocalyptic number.

It is an amenable number.

1267542755513 is a deficient number, since it is larger than the sum of its proper divisors (11714721607).

1267542755513 is a wasteful number, since it uses less digits than its factorization.

1267542755513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32068.

The product of its digits is 8820000, while the sum is 53.

The spelling of 1267542755513 in words is "one trillion, two hundred sixty-seven billion, five hundred forty-two million, seven hundred fifty-five thousand, five hundred thirteen".