66962628847 has 2 divisors, whose sum is σ = 66962628848. Its totient is φ = 66962628846.

The previous prime is 66962628779. The next prime is 66962628857. The reversal of 66962628847 is 74882626966.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66962628847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66962628857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33481314423 + 33481314424.

It is an arithmetic number, because the mean of its divisors is an integer number (33481314424).

Almost surely, 2^66962628847 is an apocalyptic number.

66962628847 is a deficient number, since it is larger than the sum of its proper divisors (1).

66962628847 is an equidigital number, since it uses as much as digits as its factorization.

66962628847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83607552, while the sum is 64.

The spelling of 66962628847 in words is "sixty-six billion, nine hundred sixty-two million, six hundred twenty-eight thousand, eight hundred forty-seven".