66733407371 has 2 divisors, whose sum is σ = 66733407372. Its totient is φ = 66733407370.

The previous prime is 66733407283. The next prime is 66733407373. The reversal of 66733407371 is 17370433766.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66733407371 is a prime.

Together with 66733407373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66733407373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33366703685 + 33366703686.

It is an arithmetic number, because the mean of its divisors is an integer number (33366703686).

Almost surely, 2^66733407371 is an apocalyptic number.

66733407371 is a deficient number, since it is larger than the sum of its proper divisors (1).

66733407371 is an equidigital number, since it uses as much as digits as its factorization.

66733407371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 47.

The spelling of 66733407371 in words is "sixty-six billion, seven hundred thirty-three million, four hundred seven thousand, three hundred seventy-one".