42447798527 has 4 divisors (see below), whose sum is σ = 43248700440. Its totient is φ = 41646896616.

The previous prime is 42447798517. The next prime is 42447798529. The reversal of 42447798527 is 72589774424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42447798527 - 2⁸ = 42447798271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42447798529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400450877 + ... + 400450982.

It is an arithmetic number, because the mean of its divisors is an integer number (10812175110).

Almost surely, 2^42447798527 is an apocalyptic number.

42447798527 is a deficient number, since it is larger than the sum of its proper divisors (800901913).

42447798527 is an equidigital number, since it uses as much as digits as its factorization.

42447798527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800901912.

The product of its digits is 31610880, while the sum is 59.

The spelling of 42447798527 in words is "forty-two billion, four hundred forty-seven million, seven hundred ninety-eight thousand, five hundred twenty-seven".