11051264311261 has 4 divisors (see below), whose sum is σ = 11051601797500. Its totient is φ = 11050926825024.

The previous prime is 11051264311237. The next prime is 11051264311327. The reversal of 11051264311261 is 16211346215011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 881505043225 + 10169759268036 = 938885^2 + 3189006^2 .

It is a cyclic number.

It is not a de Polignac number, because 11051264311261 - 2⁷ = 11051264311133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11051264311361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168693996 + ... + 168759493.

It is an arithmetic number, because the mean of its divisors is an integer number (2762900449375).

Almost surely, 2^{11051264311261} is an apocalyptic number.

It is an amenable number.

11051264311261 is a deficient number, since it is larger than the sum of its proper divisors (337486239).

11051264311261 is an equidigital number, since it uses as much as digits as its factorization.

11051264311261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337486238.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 11051264311261 in words is "eleven trillion, fifty-one billion, two hundred sixty-four million, three hundred eleven thousand, two hundred sixty-one".