78880415413 has 2 divisors, whose sum is σ = 78880415414. Its totient is φ = 78880415412.

The previous prime is 78880415359. The next prime is 78880415437. The reversal of 78880415413 is 31451408887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47968446289 + 30911969124 = 219017^2 + 175818^2 .

It is a cyclic number.

It is not a de Polignac number, because 78880415413 - 2⁹ = 78880414901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78880415473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39440207706 + 39440207707.

It is an arithmetic number, because the mean of its divisors is an integer number (39440207707).

Almost surely, 2^78880415413 is an apocalyptic number.

It is an amenable number.

78880415413 is a deficient number, since it is larger than the sum of its proper divisors (1).

78880415413 is an equidigital number, since it uses as much as digits as its factorization.

78880415413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 78880415413 in words is "seventy-eight billion, eight hundred eighty million, four hundred fifteen thousand, four hundred thirteen".