111384578387 has 2 divisors, whose sum is σ = 111384578388. Its totient is φ = 111384578386.

The previous prime is 111384578377. The next prime is 111384578423. The reversal of 111384578387 is 783875483111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111384578387 - 2³² = 107089611091 is a prime.

It is not a weakly prime, because it can be changed into another prime (111384578377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55692289193 + 55692289194.

It is an arithmetic number, because the mean of its divisors is an integer number (55692289194).

Almost surely, 2^111384578387 is an apocalyptic number.

111384578387 is a deficient number, since it is larger than the sum of its proper divisors (1).

111384578387 is an equidigital number, since it uses as much as digits as its factorization.

111384578387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 56.

The spelling of 111384578387 in words is "one hundred eleven billion, three hundred eighty-four million, five hundred seventy-eight thousand, three hundred eighty-seven".