42878305835087 has 2 divisors, whose sum is σ = 42878305835088. Its totient is φ = 42878305835086.

The previous prime is 42878305835051. The next prime is 42878305835179. The reversal of 42878305835087 is 78053850387824.

42878305835087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42878305835087 - 2⁸ = 42878305834831 is a prime.

It is a super-2 number, since 2×42878305835087² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878305835987) 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, 21439152917543 + 21439152917544.

It is an arithmetic number, because the mean of its divisors is an integer number (21439152917544).

Almost surely, 2^{42878305835087} is an apocalyptic number.

42878305835087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878305835087 is an equidigital number, since it uses as much as digits as its factorization.

42878305835087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 361267200, while the sum is 68.

The spelling of 42878305835087 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred five million, eight hundred thirty-five thousand, eighty-seven".