78242532476567 has 2 divisors, whose sum is σ = 78242532476568. Its totient is φ = 78242532476566.

The previous prime is 78242532476543. The next prime is 78242532476587. The reversal of 78242532476567 is 76567423524287.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78242532476567 - 2²⁸ = 78242264041111 is a prime.

It is a super-2 number, since 2×78242532476567² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78242532476497 and 78242532476506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78242532476587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39121266238283 + 39121266238284.

It is an arithmetic number, because the mean of its divisors is an integer number (39121266238284).

Almost surely, 2^{78242532476567} is an apocalyptic number.

78242532476567 is a deficient number, since it is larger than the sum of its proper divisors (1).

78242532476567 is an equidigital number, since it uses as much as digits as its factorization.

78242532476567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 948326400, while the sum is 68.

The spelling of 78242532476567 in words is "seventy-eight trillion, two hundred forty-two billion, five hundred thirty-two million, four hundred seventy-six thousand, five hundred sixty-seven".