11681144623 has 2 divisors, whose sum is σ = 11681144624. Its totient is φ = 11681144622.

The previous prime is 11681144621. The next prime is 11681144701. The reversal of 11681144623 is 32644118611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11681144623 - 2¹ = 11681144621 is a prime.

Together with 11681144621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11681144621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5840572311 + 5840572312.

It is an arithmetic number, because the mean of its divisors is an integer number (5840572312).

Almost surely, 2^11681144623 is an apocalyptic number.

11681144623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11681144623 is an equidigital number, since it uses as much as digits as its factorization.

11681144623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The spelling of 11681144623 in words is "eleven billion, six hundred eighty-one million, one hundred forty-four thousand, six hundred twenty-three".