11163661427 has 2 divisors, whose sum is σ = 11163661428. Its totient is φ = 11163661426.

The previous prime is 11163661367. The next prime is 11163661493. The reversal of 11163661427 is 72416636111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11163661427 - 2¹² = 11163657331 is a prime.

It is not a weakly prime, because it can be changed into another prime (11163261427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5581830713 + 5581830714.

It is an arithmetic number, because the mean of its divisors is an integer number (5581830714).

Almost surely, 2^11163661427 is an apocalyptic number.

11163661427 is a deficient number, since it is larger than the sum of its proper divisors (1).

11163661427 is an equidigital number, since it uses as much as digits as its factorization.

11163661427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The spelling of 11163661427 in words is "eleven billion, one hundred sixty-three million, six hundred sixty-one thousand, four hundred twenty-seven".