78242532476543 has 2 divisors, whose sum is σ = 78242532476544. Its totient is φ = 78242532476542.

The previous prime is 78242532476509. The next prime is 78242532476567. The reversal of 78242532476543 is 34567423524287.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34567423524287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78242532476543 - 2¹⁰ = 78242532475519 is a prime.

It is a super-2 number, since 2×78242532476543² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78242532476593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39121266238271 + 39121266238272.

It is an arithmetic number, because the mean of its divisors is an integer number (39121266238272).

Almost surely, 2^{78242532476543} is an apocalyptic number.

78242532476543 is a deficient number, since it is larger than the sum of its proper divisors (1).

78242532476543 is an equidigital number, since it uses as much as digits as its factorization.

78242532476543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270950400, while the sum is 62.

The spelling of 78242532476543 in words is "seventy-eight trillion, two hundred forty-two billion, five hundred thirty-two million, four hundred seventy-six thousand, five hundred forty-three".