42878306082413 has 2 divisors, whose sum is σ = 42878306082414. Its totient is φ = 42878306082412.

The previous prime is 42878306082407. The next prime is 42878306082511. The reversal of 42878306082413 is 31428060387824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26590802017129 + 16287504065284 = 5156627^2 + 4035778^2 .

It is a cyclic number.

It is not a de Polignac number, because 42878306082413 - 2¹⁸ = 42878305820269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878306082713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439153041206 + 21439153041207.

It is an arithmetic number, because the mean of its divisors is an integer number (21439153041207).

Almost surely, 2^{42878306082413} is an apocalyptic number.

It is an amenable number.

42878306082413 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878306082413 is an equidigital number, since it uses as much as digits as its factorization.

42878306082413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 42878306082413 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred six million, eighty-two thousand, four hundred thirteen".