66402426107 has 2 divisors, whose sum is σ = 66402426108. Its totient is φ = 66402426106.

The previous prime is 66402426011. The next prime is 66402426131. The reversal of 66402426107 is 70162420466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66402426107 - 2¹⁸ = 66402163963 is a prime.

It is not a weakly prime, because it can be changed into another prime (66402426907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33201213053 + 33201213054.

It is an arithmetic number, because the mean of its divisors is an integer number (33201213054).

Almost surely, 2^66402426107 is an apocalyptic number.

66402426107 is a deficient number, since it is larger than the sum of its proper divisors (1).

66402426107 is an equidigital number, since it uses as much as digits as its factorization.

66402426107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 66402426107 in words is "sixty-six billion, four hundred two million, four hundred twenty-six thousand, one hundred seven".