66962426387 has 2 divisors, whose sum is σ = 66962426388. Its totient is φ = 66962426386.

The previous prime is 66962426353. The next prime is 66962426407. The reversal of 66962426387 is 78362426966.

66962426387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66962426387 - 2¹² = 66962422291 is a prime.

It is not a weakly prime, because it can be changed into another prime (66962426087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33481213193 + 33481213194.

It is an arithmetic number, because the mean of its divisors is an integer number (33481213194).

Almost surely, 2^66962426387 is an apocalyptic number.

66962426387 is a deficient number, since it is larger than the sum of its proper divisors (1).

66962426387 is an equidigital number, since it uses as much as digits as its factorization.

66962426387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 59.

The spelling of 66962426387 in words is "sixty-six billion, nine hundred sixty-two million, four hundred twenty-six thousand, three hundred eighty-seven".