42457644599 has 2 divisors, whose sum is σ = 42457644600. Its totient is φ = 42457644598.

The previous prime is 42457644589. The next prime is 42457644617. The reversal of 42457644599 is 99544675424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42457644599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42457644589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21228822299 + 21228822300.

It is an arithmetic number, because the mean of its divisors is an integer number (21228822300).

Almost surely, 2^42457644599 is an apocalyptic number.

42457644599 is a deficient number, since it is larger than the sum of its proper divisors (1).

42457644599 is an equidigital number, since it uses as much as digits as its factorization.

42457644599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43545600, while the sum is 59.

The spelling of 42457644599 in words is "forty-two billion, four hundred fifty-seven million, six hundred forty-four thousand, five hundred ninety-nine".