111545351191 has 2 divisors, whose sum is σ = 111545351192. Its totient is φ = 111545351190.

The previous prime is 111545351189. The next prime is 111545351219. The reversal of 111545351191 is 191153545111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111545351191 - 2¹ = 111545351189 is a prime.

Together with 111545351189, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111545351191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111540351191) 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, 55772675595 + 55772675596.

It is an arithmetic number, because the mean of its divisors is an integer number (55772675596).

Almost surely, 2^111545351191 is an apocalyptic number.

111545351191 is a deficient number, since it is larger than the sum of its proper divisors (1).

111545351191 is an equidigital number, since it uses as much as digits as its factorization.

111545351191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 37.

It can be divided in two parts, 11154535 and 1191, that added together give a triangular number (11155726 = T₄₇₂₃).

The spelling of 111545351191 in words is "one hundred eleven billion, five hundred forty-five million, three hundred fifty-one thousand, one hundred ninety-one".