111333456678761 has 2 divisors, whose sum is σ = 111333456678762. Its totient is φ = 111333456678760.

The previous prime is 111333456678751. The next prime is 111333456678779. The reversal of 111333456678761 is 167876654333111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102297931691536 + 9035524987225 = 10114244^2 + 3005915^2 .

It is a cyclic number.

It is not a de Polignac number, because 111333456678761 - 2¹⁸ = 111333456416617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111333456678694 and 111333456678703.

It is not a weakly prime, because it can be changed into another prime (111333456678751) 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, 55666728339380 + 55666728339381.

It is an arithmetic number, because the mean of its divisors is an integer number (55666728339381).

Almost surely, 2^{111333456678761} is an apocalyptic number.

It is an amenable number.

111333456678761 is a deficient number, since it is larger than the sum of its proper divisors (1).

111333456678761 is an equidigital number, since it uses as much as digits as its factorization.

111333456678761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 62.

The spelling of 111333456678761 in words is "one hundred eleven trillion, three hundred thirty-three billion, four hundred fifty-six million, six hundred seventy-eight thousand, seven hundred sixty-one".