111455421439 has 2 divisors, whose sum is σ = 111455421440. Its totient is φ = 111455421438.

The previous prime is 111455421421. The next prime is 111455421463. The reversal of 111455421439 is 934124554111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111455421439 - 2¹³ = 111455413247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111455121439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55727710719 + 55727710720.

It is an arithmetic number, because the mean of its divisors is an integer number (55727710720).

Almost surely, 2^111455421439 is an apocalyptic number.

111455421439 is a deficient number, since it is larger than the sum of its proper divisors (1).

111455421439 is an equidigital number, since it uses as much as digits as its factorization.

111455421439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The spelling of 111455421439 in words is "one hundred eleven billion, four hundred fifty-five million, four hundred twenty-one thousand, four hundred thirty-nine".