78146183530249 has 2 divisors, whose sum is σ = 78146183530250. Its totient is φ = 78146183530248.

The previous prime is 78146183530183. The next prime is 78146183530277. The reversal of 78146183530249 is 94203538164187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60593100200649 + 17553083329600 = 7784157^2 + 4189640^2 .

It is a cyclic number.

It is not a de Polignac number, because 78146183530249 - 2²⁹ = 78145646659337 is a prime.

It is a super-2 number, since 2×78146183530249² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78146183500249) 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, 39073091765124 + 39073091765125.

It is an arithmetic number, because the mean of its divisors is an integer number (39073091765125).

It is a 2-persistent number, because it is pandigital, and so is 2⋅78146183530249 = 156292367060498, but 3⋅78146183530249 = 234438550590747 is not.

Almost surely, 2^{78146183530249} is an apocalyptic number.

It is an amenable number.

78146183530249 is a deficient number, since it is larger than the sum of its proper divisors (1).

78146183530249 is an equidigital number, since it uses as much as digits as its factorization.

78146183530249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 78146183530249 in words is "seventy-eight trillion, one hundred forty-six billion, one hundred eighty-three million, five hundred thirty thousand, two hundred forty-nine".