42018550898867 has 2 divisors, whose sum is σ = 42018550898868. Its totient is φ = 42018550898866.

The previous prime is 42018550898861. The next prime is 42018550898879. The reversal of 42018550898867 is 76889805581024.

42018550898867 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 42018550898867 - 2¹⁶ = 42018550833331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42018550898867.

It is not a weakly prime, because it can be changed into another prime (42018550898861) 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, 21009275449433 + 21009275449434.

It is an arithmetic number, because the mean of its divisors is an integer number (21009275449434).

Almost surely, 2^{42018550898867} is an apocalyptic number.

42018550898867 is a deficient number, since it is larger than the sum of its proper divisors (1).

42018550898867 is an equidigital number, since it uses as much as digits as its factorization.

42018550898867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 309657600, while the sum is 71.

The spelling of 42018550898867 in words is "forty-two trillion, eighteen billion, five hundred fifty million, eight hundred ninety-eight thousand, eight hundred sixty-seven".