82578302780251 has 2 divisors, whose sum is σ = 82578302780252. Its totient is φ = 82578302780250.

The previous prime is 82578302780209. The next prime is 82578302780263. The reversal of 82578302780251 is 15208720387528.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82578302780251 - 2¹⁹ = 82578302255963 is a prime.

It is not a weakly prime, because it can be changed into another prime (82578302780951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41289151390125 + 41289151390126.

It is an arithmetic number, because the mean of its divisors is an integer number (41289151390126).

Almost surely, 2^{82578302780251} is an apocalyptic number.

82578302780251 is a deficient number, since it is larger than the sum of its proper divisors (1).

82578302780251 is an equidigital number, since it uses as much as digits as its factorization.

82578302780251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15052800, while the sum is 58.

The spelling of 82578302780251 in words is "eighty-two trillion, five hundred seventy-eight billion, three hundred two million, seven hundred eighty thousand, two hundred fifty-one".