111111110045473 has 2 divisors, whose sum is σ = 111111110045474. Its totient is φ = 111111110045472.

The previous prime is 111111110045431. The next prime is 111111110045497. The reversal of 111111110045473 is 374540011111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106431554665489 + 4679555379984 = 10316567^2 + 2163228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111111110045473 is a prime.

It is a super-2 number, since 2×111111110045473² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111111110045773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555555022736 + 55555555022737.

It is an arithmetic number, because the mean of its divisors is an integer number (55555555022737).

Almost surely, 2^{111111110045473} is an apocalyptic number.

It is an amenable number.

111111110045473 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111110045473 is an equidigital number, since it uses as much as digits as its factorization.

111111110045473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 31.

Adding to 111111110045473 its reverse (374540011111111), we get a palindrome (485651121156584).

The spelling of 111111110045473 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, forty-five thousand, four hundred seventy-three".