42036548647 has 4 divisors (see below), whose sum is σ = 42131439720. Its totient is φ = 41941657576.

The previous prime is 42036548641. The next prime is 42036548693. The reversal of 42036548647 is 74684563024.

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 42036548647 - 2¹⁵ = 42036515879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42036548647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42036548641) 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, 47444872 + ... + 47445757.

It is an arithmetic number, because the mean of its divisors is an integer number (10532859930).

Almost surely, 2^42036548647 is an apocalyptic number.

42036548647 is a deficient number, since it is larger than the sum of its proper divisors (94891073).

42036548647 is an equidigital number, since it uses as much as digits as its factorization.

42036548647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94891072.

The product of its (nonzero) digits is 3870720, while the sum is 49.

The spelling of 42036548647 in words is "forty-two billion, thirty-six million, five hundred forty-eight thousand, six hundred forty-seven".