42247993673 has 2 divisors, whose sum is σ = 42247993674. Its totient is φ = 42247993672.

The previous prime is 42247993637. The next prime is 42247993691. The reversal of 42247993673 is 37639974224.

42247993673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (42247993637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42192446464 + 55547209 = 205408^2 + 7453^2 .

It is a cyclic number.

It is not a de Polignac number, because 42247993673 - 2¹⁰ = 42247992649 is a prime.

It is not a weakly prime, because it can be changed into another prime (42247993603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21123996836 + 21123996837.

It is an arithmetic number, because the mean of its divisors is an integer number (21123996837).

Almost surely, 2^42247993673 is an apocalyptic number.

It is an amenable number.

42247993673 is a deficient number, since it is larger than the sum of its proper divisors (1).

42247993673 is an equidigital number, since it uses as much as digits as its factorization.

42247993673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 56.

The spelling of 42247993673 in words is "forty-two billion, two hundred forty-seven million, nine hundred ninety-three thousand, six hundred seventy-three".