11156142427 has 2 divisors, whose sum is σ = 11156142428. Its totient is φ = 11156142426.

The previous prime is 11156142421. The next prime is 11156142523. The reversal of 11156142427 is 72424165111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11156142427 - 2³ = 11156142419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11156142392 and 11156142401.

It is not a weakly prime, because it can be changed into another prime (11156142421) 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, 5578071213 + 5578071214.

It is an arithmetic number, because the mean of its divisors is an integer number (5578071214).

Almost surely, 2^11156142427 is an apocalyptic number.

11156142427 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156142427 is an equidigital number, since it uses as much as digits as its factorization.

11156142427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The spelling of 11156142427 in words is "eleven billion, one hundred fifty-six million, one hundred forty-two thousand, four hundred twenty-seven".