78463034726057 has 2 divisors, whose sum is σ = 78463034726058. Its totient is φ = 78463034726056.

The previous prime is 78463034726003. The next prime is 78463034726059. The reversal of 78463034726057 is 75062743036487.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50523152225296 + 27939882500761 = 7107964^2 + 5285819^2 .

It is an emirp because it is prime and its reverse (75062743036487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78463034726057 - 2³² = 78458739758761 is a prime.

Together with 78463034726059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78463034726059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39231517363028 + 39231517363029.

It is an arithmetic number, because the mean of its divisors is an integer number (39231517363029).

Almost surely, 2^{78463034726057} is an apocalyptic number.

It is an amenable number.

78463034726057 is a deficient number, since it is larger than the sum of its proper divisors (1).

78463034726057 is an equidigital number, since it uses as much as digits as its factorization.

78463034726057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142248960, while the sum is 62.

The spelling of 78463034726057 in words is "seventy-eight trillion, four hundred sixty-three billion, thirty-four million, seven hundred twenty-six thousand, fifty-seven".