11145534427 has 2 divisors, whose sum is σ = 11145534428. Its totient is φ = 11145534426.

The previous prime is 11145534391. The next prime is 11145534431. The reversal of 11145534427 is 72443554111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11145534427 is a prime.

It is a super-3 number, since 3×11145534427³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11145534227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572767213 + 5572767214.

It is an arithmetic number, because the mean of its divisors is an integer number (5572767214).

Almost surely, 2^11145534427 is an apocalyptic number.

11145534427 is a deficient number, since it is larger than the sum of its proper divisors (1).

11145534427 is an equidigital number, since it uses as much as digits as its factorization.

11145534427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The spelling of 11145534427 in words is "eleven billion, one hundred forty-five million, five hundred thirty-four thousand, four hundred twenty-seven".