66247442043 has 8 divisors (see below), whose sum is σ = 88840501008. Its totient is φ = 43909672224.

The previous prime is 66247442017. The next prime is 66247442141. The reversal of 66247442043 is 34024474266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66247442043 - 2⁵ = 66247442011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66247441986 and 66247442004.

It is not an unprimeable number, because it can be changed into a prime (66247442003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63821680 + ... + 63822717.

It is an arithmetic number, because the mean of its divisors is an integer number (11105062626).

Almost surely, 2^66247442043 is an apocalyptic number.

66247442043 is a deficient number, since it is larger than the sum of its proper divisors (22593058965).

66247442043 is a wasteful number, since it uses less digits than its factorization.

66247442043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127644573.

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 66247442043 in words is "sixty-six billion, two hundred forty-seven million, four hundred forty-two thousand, forty-three".