78296456423 has 2 divisors, whose sum is σ = 78296456424. Its totient is φ = 78296456422.

The previous prime is 78296456341. The next prime is 78296456449. The reversal of 78296456423 is 32465469287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78296456423 - 2¹² = 78296452327 is a prime.

It is a super-2 number, since 2×78296456423² (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 (78296456723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39148228211 + 39148228212.

It is an arithmetic number, because the mean of its divisors is an integer number (39148228212).

Almost surely, 2^78296456423 is an apocalyptic number.

78296456423 is a deficient number, since it is larger than the sum of its proper divisors (1).

78296456423 is an equidigital number, since it uses as much as digits as its factorization.

78296456423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 56.

The spelling of 78296456423 in words is "seventy-eight billion, two hundred ninety-six million, four hundred fifty-six thousand, four hundred twenty-three".