1264661334011 has 4 divisors (see below), whose sum is σ = 1264663964352. Its totient is φ = 1264658703672.

The previous prime is 1264661333989. The next prime is 1264661334029. The reversal of 1264661334011 is 1104331664621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1264661334011 - 2¹⁴ = 1264661317627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264661334611) 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 3 ways as a sum of consecutive naturals, for example, 365291 + ... + 1631796.

It is an arithmetic number, because the mean of its divisors is an integer number (316165991088).

Almost surely, 2^{1264661334011} is an apocalyptic number.

1264661334011 is a deficient number, since it is larger than the sum of its proper divisors (2630341).

1264661334011 is an equidigital number, since it uses as much as digits as its factorization.

1264661334011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630340.

The product of its (nonzero) digits is 62208, while the sum is 38.

Adding to 1264661334011 its reverse (1104331664621), we get a palindrome (2368992998632).

The spelling of 1264661334011 in words is "one trillion, two hundred sixty-four billion, six hundred sixty-one million, three hundred thirty-four thousand, eleven".