2778000000203 has 2 divisors, whose sum is σ = 2778000000204. Its totient is φ = 2778000000202.

The previous prime is 2778000000199. The next prime is 2778000000211. The reversal of 2778000000203 is 3020000008772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2778000000203 - 2² = 2778000000199 is a prime.

It is a super-2 number, since 2×2778000000203² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2778000000263) 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, 1389000000101 + 1389000000102.

It is an arithmetic number, because the mean of its divisors is an integer number (1389000000102).

Almost surely, 2^{2778000000203} is an apocalyptic number.

2778000000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2778000000203 is an equidigital number, since it uses as much as digits as its factorization.

2778000000203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

Adding to 2778000000203 its reverse (3020000008772), we get a palindrome (5798000008975).

The spelling of 2778000000203 in words is "two trillion, seven hundred seventy-eight billion, two hundred three", and thus it is an aban number.