65500555621159 has 2 divisors, whose sum is σ = 65500555621160. Its totient is φ = 65500555621158.

The previous prime is 65500555621079. The next prime is 65500555621313. The reversal of 65500555621159 is 95112655500556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65500555621159 - 2⁷ = 65500555621031 is a prime.

It is a super-4 number, since 4×65500555621159⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65500555621559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32750277810579 + 32750277810580.

It is an arithmetic number, because the mean of its divisors is an integer number (32750277810580).

Almost surely, 2^{65500555621159} is an apocalyptic number.

65500555621159 is a deficient number, since it is larger than the sum of its proper divisors (1).

65500555621159 is an equidigital number, since it uses as much as digits as its factorization.

65500555621159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10125000, while the sum is 55.

The spelling of 65500555621159 in words is "sixty-five trillion, five hundred billion, five hundred fifty-five million, six hundred twenty-one thousand, one hundred fifty-nine".