66667847043 has 16 divisors (see below), whose sum is σ = 103662348800. Its totient is φ = 38095912008.

The previous prime is 66667847027. The next prime is 66667847101. The reversal of 66667847043 is 34074876666.

It is not a de Polignac number, because 66667847043 - 2⁴ = 66667847027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66667847023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32393455 + ... + 32395512.

It is an arithmetic number, because the mean of its divisors is an integer number (6478896800).

Almost surely, 2^66667847043 is an apocalyptic number.

66667847043 is a deficient number, since it is larger than the sum of its proper divisors (36994501757).

66667847043 is an equidigital number, since it uses as much as digits as its factorization.

66667847043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64788991 (or 64788977 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 66667847043 in words is "sixty-six billion, six hundred sixty-seven million, eight hundred forty-seven thousand, forty-three".