11778542203 has 2 divisors, whose sum is σ = 11778542204. Its totient is φ = 11778542202.

The previous prime is 11778542161. The next prime is 11778542221. The reversal of 11778542203 is 30224587711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11778542203 is a prime.

It is not a weakly prime, because it can be changed into another prime (11778542273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5889271101 + 5889271102.

It is an arithmetic number, because the mean of its divisors is an integer number (5889271102).

Almost surely, 2^11778542203 is an apocalyptic number.

11778542203 is a deficient number, since it is larger than the sum of its proper divisors (1).

11778542203 is an equidigital number, since it uses as much as digits as its factorization.

11778542203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 11778542203 in words is "eleven billion, seven hundred seventy-eight million, five hundred forty-two thousand, two hundred three".