42878330020087 has 2 divisors, whose sum is σ = 42878330020088. Its totient is φ = 42878330020086.

The previous prime is 42878330020051. The next prime is 42878330020111. The reversal of 42878330020087 is 78002003387824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42878330020087 is a prime.

It is a super-2 number, since 2×42878330020087² (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 (42878330020007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439165010043 + 21439165010044.

It is an arithmetic number, because the mean of its divisors is an integer number (21439165010044).

Almost surely, 2^{42878330020087} is an apocalyptic number.

42878330020087 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878330020087 is an equidigital number, since it uses as much as digits as its factorization.

42878330020087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 42878330020087 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred thirty million, twenty thousand, eighty-seven".