111620728567 has 2 divisors, whose sum is σ = 111620728568. Its totient is φ = 111620728566.

The previous prime is 111620728501. The next prime is 111620728577. The reversal of 111620728567 is 765827026111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111620728567 - 2¹¹ = 111620726519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111620728577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55810364283 + 55810364284.

It is an arithmetic number, because the mean of its divisors is an integer number (55810364284).

Almost surely, 2^111620728567 is an apocalyptic number.

111620728567 is a deficient number, since it is larger than the sum of its proper divisors (1).

111620728567 is an equidigital number, since it uses as much as digits as its factorization.

111620728567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 111620728567 in words is "one hundred eleven billion, six hundred twenty million, seven hundred twenty-eight thousand, five hundred sixty-seven".