42246691573 has 2 divisors, whose sum is σ = 42246691574. Its totient is φ = 42246691572.

The previous prime is 42246691541. The next prime is 42246691661. The reversal of 42246691573 is 37519664224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40898186289 + 1348505284 = 202233^2 + 36722^2 .

It is a cyclic number.

It is not a de Polignac number, because 42246691573 - 2⁵ = 42246691541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42246698573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21123345786 + 21123345787.

It is an arithmetic number, because the mean of its divisors is an integer number (21123345787).

Almost surely, 2^42246691573 is an apocalyptic number.

It is an amenable number.

42246691573 is a deficient number, since it is larger than the sum of its proper divisors (1).

42246691573 is an equidigital number, since it uses as much as digits as its factorization.

42246691573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 49.

The spelling of 42246691573 in words is "forty-two billion, two hundred forty-six million, six hundred ninety-one thousand, five hundred seventy-three".