77228818783 has 2 divisors, whose sum is σ = 77228818784. Its totient is φ = 77228818782.

The previous prime is 77228818769. The next prime is 77228818831. The reversal of 77228818783 is 38781882277.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77228818783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77228828783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38614409391 + 38614409392.

It is an arithmetic number, because the mean of its divisors is an integer number (38614409392).

Almost surely, 2^77228818783 is an apocalyptic number.

77228818783 is a deficient number, since it is larger than the sum of its proper divisors (1).

77228818783 is an equidigital number, since it uses as much as digits as its factorization.

77228818783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16859136, while the sum is 61.

The spelling of 77228818783 in words is "seventy-seven billion, two hundred twenty-eight million, eight hundred eighteen thousand, seven hundred eighty-three".