111516451663 has 2 divisors, whose sum is σ = 111516451664. Its totient is φ = 111516451662.

The previous prime is 111516451619. The next prime is 111516451693. The reversal of 111516451663 is 366154615111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111516451663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111516451693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55758225831 + 55758225832.

It is an arithmetic number, because the mean of its divisors is an integer number (55758225832).

Almost surely, 2^111516451663 is an apocalyptic number.

111516451663 is a deficient number, since it is larger than the sum of its proper divisors (1).

111516451663 is an equidigital number, since it uses as much as digits as its factorization.

111516451663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The spelling of 111516451663 in words is "one hundred eleven billion, five hundred sixteen million, four hundred fifty-one thousand, six hundred sixty-three".