78354204463 has 2 divisors, whose sum is σ = 78354204464. Its totient is φ = 78354204462.

The previous prime is 78354204457. The next prime is 78354204499. The reversal of 78354204463 is 36440245387.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78354204463 is a prime.

It is a super-2 number, since 2×78354204463² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78354201463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39177102231 + 39177102232.

It is an arithmetic number, because the mean of its divisors is an integer number (39177102232).

Almost surely, 2^78354204463 is an apocalyptic number.

78354204463 is a deficient number, since it is larger than the sum of its proper divisors (1).

78354204463 is an equidigital number, since it uses as much as digits as its factorization.

78354204463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 46.

The spelling of 78354204463 in words is "seventy-eight billion, three hundred fifty-four million, two hundred four thousand, four hundred sixty-three".