78452423677231 has 2 divisors, whose sum is σ = 78452423677232. Its totient is φ = 78452423677230.

The previous prime is 78452423677219. The next prime is 78452423677241. The reversal of 78452423677231 is 13277632425487.

It is a strong prime.

It is an emirp because it is prime and its reverse (13277632425487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78452423677231 - 2³³ = 78443833742639 is a prime.

It is a super-2 number, since 2×78452423677231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78452423677231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78452423677211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39226211838615 + 39226211838616.

It is an arithmetic number, because the mean of its divisors is an integer number (39226211838616).

Almost surely, 2^{78452423677231} is an apocalyptic number.

78452423677231 is a deficient number, since it is larger than the sum of its proper divisors (1).

78452423677231 is an equidigital number, since it uses as much as digits as its factorization.

78452423677231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94832640, while the sum is 61.

The spelling of 78452423677231 in words is "seventy-eight trillion, four hundred fifty-two billion, four hundred twenty-three million, six hundred seventy-seven thousand, two hundred thirty-one".