111678466541 has 2 divisors, whose sum is σ = 111678466542. Its totient is φ = 111678466540.

The previous prime is 111678466499. The next prime is 111678466547. The reversal of 111678466541 is 145664876111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99742904041 + 11935562500 = 315821^2 + 109250^2 .

It is a cyclic number.

It is not a de Polignac number, because 111678466541 - 2³⁰ = 110604724717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111678466541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111678466547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55839233270 + 55839233271.

It is an arithmetic number, because the mean of its divisors is an integer number (55839233271).

Almost surely, 2^111678466541 is an apocalyptic number.

It is an amenable number.

111678466541 is a deficient number, since it is larger than the sum of its proper divisors (1).

111678466541 is an equidigital number, since it uses as much as digits as its factorization.

111678466541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 50.

The spelling of 111678466541 in words is "one hundred eleven billion, six hundred seventy-eight million, four hundred sixty-six thousand, five hundred forty-one".