11611056641 has 2 divisors, whose sum is σ = 11611056642. Its totient is φ = 11611056640.

The previous prime is 11611056637. The next prime is 11611056659. The reversal of 11611056641 is 14665011611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8906640625 + 2704416016 = 94375^2 + 52004^2 .

It is an emirp because it is prime and its reverse (14665011611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11611056641 - 2² = 11611056637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11611056598 and 11611056607.

It is not a weakly prime, because it can be changed into another prime (11611056601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5805528320 + 5805528321.

It is an arithmetic number, because the mean of its divisors is an integer number (5805528321).

Almost surely, 2^11611056641 is an apocalyptic number.

It is an amenable number.

11611056641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11611056641 is an equidigital number, since it uses as much as digits as its factorization.

11611056641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 11611056641 in words is "eleven billion, six hundred eleven million, fifty-six thousand, six hundred forty-one".