77894786903 has 2 divisors, whose sum is σ = 77894786904. Its totient is φ = 77894786902.

The previous prime is 77894786897. The next prime is 77894786917. The reversal of 77894786903 is 30968749877.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77894786903 - 2⁶ = 77894786839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77894746903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38947393451 + 38947393452.

It is an arithmetic number, because the mean of its divisors is an integer number (38947393452).

Almost surely, 2^77894786903 is an apocalyptic number.

77894786903 is a deficient number, since it is larger than the sum of its proper divisors (1).

77894786903 is an equidigital number, since it uses as much as digits as its factorization.

77894786903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 77894786903 in words is "seventy-seven billion, eight hundred ninety-four million, seven hundred eighty-six thousand, nine hundred three".