42838046402887 has 2 divisors, whose sum is σ = 42838046402888. Its totient is φ = 42838046402886.

The previous prime is 42838046402867. The next prime is 42838046402909. The reversal of 42838046402887 is 78820464083824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42838046402887 - 2¹⁹ = 42838045878599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42838046402867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21419023201443 + 21419023201444.

It is an arithmetic number, because the mean of its divisors is an integer number (21419023201444).

Almost surely, 2^{42838046402887} is an apocalyptic number.

42838046402887 is a deficient number, since it is larger than the sum of its proper divisors (1).

42838046402887 is an equidigital number, since it uses as much as digits as its factorization.

42838046402887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132120576, while the sum is 64.

The spelling of 42838046402887 in words is "forty-two trillion, eight hundred thirty-eight billion, forty-six million, four hundred two thousand, eight hundred eighty-seven".