42453418993 has 2 divisors, whose sum is σ = 42453418994. Its totient is φ = 42453418992.

The previous prime is 42453418933. The next prime is 42453419003. The reversal of 42453418993 is 39981435424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37082434624 + 5370984369 = 192568^2 + 73287^2 .

It is a cyclic number.

It is not a de Polignac number, because 42453418993 - 2¹³ = 42453410801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42453418993.

It is not a weakly prime, because it can be changed into another prime (42453418933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21226709496 + 21226709497.

It is an arithmetic number, because the mean of its divisors is an integer number (21226709497).

Almost surely, 2^42453418993 is an apocalyptic number.

It is an amenable number.

42453418993 is a deficient number, since it is larger than the sum of its proper divisors (1).

42453418993 is an equidigital number, since it uses as much as digits as its factorization.

42453418993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 52.

The spelling of 42453418993 in words is "forty-two billion, four hundred fifty-three million, four hundred eighteen thousand, nine hundred ninety-three".