11611377643 has 2 divisors, whose sum is σ = 11611377644. Its totient is φ = 11611377642.

The previous prime is 11611377611. The next prime is 11611377647. The reversal of 11611377643 is 34677311611.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34677311611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11611377643 - 2⁵ = 11611377611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11611377596 and 11611377605.

It is not a weakly prime, because it can be changed into another prime (11611377647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5805688821 + 5805688822.

It is an arithmetic number, because the mean of its divisors is an integer number (5805688822).

Almost surely, 2^11611377643 is an apocalyptic number.

11611377643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11611377643 is an equidigital number, since it uses as much as digits as its factorization.

11611377643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The spelling of 11611377643 in words is "eleven billion, six hundred eleven million, three hundred seventy-seven thousand, six hundred forty-three".