111243845507 has 2 divisors, whose sum is σ = 111243845508. Its totient is φ = 111243845506.

The previous prime is 111243845473. The next prime is 111243845549. The reversal of 111243845507 is 705548342111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111243845507 is a prime.

It is not a weakly prime, because it can be changed into another prime (111243865507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55621922753 + 55621922754.

It is an arithmetic number, because the mean of its divisors is an integer number (55621922754).

Almost surely, 2^111243845507 is an apocalyptic number.

111243845507 is a deficient number, since it is larger than the sum of its proper divisors (1).

111243845507 is an equidigital number, since it uses as much as digits as its factorization.

111243845507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 111243845507 in words is "one hundred eleven billion, two hundred forty-three million, eight hundred forty-five thousand, five hundred seven".