111105505487 has 2 divisors, whose sum is σ = 111105505488. Its totient is φ = 111105505486.

The previous prime is 111105505481. The next prime is 111105505517. The reversal of 111105505487 is 784505501111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111105505487 - 2⁴ = 111105505471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111105505487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111105505481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55552752743 + 55552752744.

It is an arithmetic number, because the mean of its divisors is an integer number (55552752744).

Almost surely, 2^111105505487 is an apocalyptic number.

111105505487 is a deficient number, since it is larger than the sum of its proper divisors (1).

111105505487 is an equidigital number, since it uses as much as digits as its factorization.

111105505487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 38.

The spelling of 111105505487 in words is "one hundred eleven billion, one hundred five million, five hundred five thousand, four hundred eighty-seven".