66377988977359 has 2 divisors, whose sum is σ = 66377988977360. Its totient is φ = 66377988977358.

The previous prime is 66377988977353. The next prime is 66377988977371. The reversal of 66377988977359 is 95377988977366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66377988977359 - 2⁵ = 66377988977327 is a prime.

It is a super-2 number, since 2×66377988977359² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66377988977353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33188994488679 + 33188994488680.

It is an arithmetic number, because the mean of its divisors is an integer number (33188994488680).

Almost surely, 2^{66377988977359} is an apocalyptic number.

66377988977359 is a deficient number, since it is larger than the sum of its proper divisors (1).

66377988977359 is an equidigital number, since it uses as much as digits as its factorization.

66377988977359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181474110720, while the sum is 94.

The spelling of 66377988977359 in words is "sixty-six trillion, three hundred seventy-seven billion, nine hundred eighty-eight million, nine hundred seventy-seven thousand, three hundred fifty-nine".