111999253447 has 2 divisors, whose sum is σ = 111999253448. Its totient is φ = 111999253446.

The previous prime is 111999253441. The next prime is 111999253493. The reversal of 111999253447 is 744352999111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111999253447 - 2³¹ = 109851769799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111999253441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55999626723 + 55999626724.

It is an arithmetic number, because the mean of its divisors is an integer number (55999626724).

Almost surely, 2^111999253447 is an apocalyptic number.

111999253447 is a deficient number, since it is larger than the sum of its proper divisors (1).

111999253447 is an equidigital number, since it uses as much as digits as its factorization.

111999253447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 55.

The spelling of 111999253447 in words is "one hundred eleven billion, nine hundred ninety-nine million, two hundred fifty-three thousand, four hundred forty-seven".