66935873047 has 2 divisors, whose sum is σ = 66935873048. Its totient is φ = 66935873046.

The previous prime is 66935873023. The next prime is 66935873063. The reversal of 66935873047 is 74037853966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66935873047 - 2¹⁹ = 66935348759 is a prime.

It is a super-2 number, since 2×66935873047² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66935872982 and 66935873000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66935873747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33467936523 + 33467936524.

It is an arithmetic number, because the mean of its divisors is an integer number (33467936524).

Almost surely, 2^66935873047 is an apocalyptic number.

66935873047 is a deficient number, since it is larger than the sum of its proper divisors (1).

66935873047 is an equidigital number, since it uses as much as digits as its factorization.

66935873047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 66935873047 in words is "sixty-six billion, nine hundred thirty-five million, eight hundred seventy-three thousand, forty-seven".