42018550898879 has 2 divisors, whose sum is σ = 42018550898880. Its totient is φ = 42018550898878.

The previous prime is 42018550898867. The next prime is 42018550898899. The reversal of 42018550898879 is 97889805581024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42018550898879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42018550898899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21009275449439 + 21009275449440.

It is an arithmetic number, because the mean of its divisors is an integer number (21009275449440).

Almost surely, 2^{42018550898879} is an apocalyptic number.

42018550898879 is a deficient number, since it is larger than the sum of its proper divisors (1).

42018550898879 is an equidigital number, since it uses as much as digits as its factorization.

42018550898879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 464486400, while the sum is 74.

The spelling of 42018550898879 in words is "forty-two trillion, eighteen billion, five hundred fifty million, eight hundred ninety-eight thousand, eight hundred seventy-nine".