66625334807 has 2 divisors, whose sum is σ = 66625334808. Its totient is φ = 66625334806.

The previous prime is 66625334771. The next prime is 66625334821. The reversal of 66625334807 is 70843352666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66625334807 - 2²⁸ = 66356899351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66625334837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33312667403 + 33312667404.

It is an arithmetic number, because the mean of its divisors is an integer number (33312667404).

Almost surely, 2^66625334807 is an apocalyptic number.

66625334807 is a deficient number, since it is larger than the sum of its proper divisors (1).

66625334807 is an equidigital number, since it uses as much as digits as its factorization.

66625334807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 66625334807 in words is "sixty-six billion, six hundred twenty-five million, three hundred thirty-four thousand, eight hundred seven".