42878785052063 has 2 divisors, whose sum is σ = 42878785052064. Its totient is φ = 42878785052062.

The previous prime is 42878785052041. The next prime is 42878785052161. The reversal of 42878785052063 is 36025058787824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42878785052063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42878785072063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21439392526031 + 21439392526032.

It is an arithmetic number, because the mean of its divisors is an integer number (21439392526032).

Almost surely, 2^{42878785052063} is an apocalyptic number.

42878785052063 is a deficient number, since it is larger than the sum of its proper divisors (1).

42878785052063 is an equidigital number, since it uses as much as digits as its factorization.

42878785052063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180633600, while the sum is 65.

The spelling of 42878785052063 in words is "forty-two trillion, eight hundred seventy-eight billion, seven hundred eighty-five million, fifty-two thousand, sixty-three".