78606655103 has 2 divisors, whose sum is σ = 78606655104. Its totient is φ = 78606655102.

The previous prime is 78606655073. The next prime is 78606655109. The reversal of 78606655103 is 30155660687.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78606655103 is a prime.

It is a super-3 number, since 3×78606655103³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78606655109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39303327551 + 39303327552.

It is an arithmetic number, because the mean of its divisors is an integer number (39303327552).

Almost surely, 2^78606655103 is an apocalyptic number.

78606655103 is a deficient number, since it is larger than the sum of its proper divisors (1).

78606655103 is an equidigital number, since it uses as much as digits as its factorization.

78606655103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 78606655103 in words is "seventy-eight billion, six hundred six million, six hundred fifty-five thousand, one hundred three".