42878306082511 has 2 divisors, whose sum is σ = 42878306082512. Its totient is φ = 42878306082510.

The previous prime is 42878306082413. The next prime is 42878306082607. The reversal of 42878306082511 is 11528060387824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42878306082511 - 2⁷ = 42878306082383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878306082011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439153041255 + 21439153041256.

It is an arithmetic number, because the mean of its divisors is an integer number (21439153041256).

Almost surely, 2^{42878306082511} is an apocalyptic number.

42878306082511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878306082511 is an equidigital number, since it uses as much as digits as its factorization.

42878306082511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 42878306082511 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred six million, eighty-two thousand, five hundred eleven".