655922616766801 has 2 divisors, whose sum is σ = 655922616766802. Its totient is φ = 655922616766800.

The previous prime is 655922616766799. The next prime is 655922616766819. The reversal of 655922616766801 is 108667616229556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655740163915776 + 182452851025 = 25607424^2 + 427145^2 .

It is a cyclic number.

It is not a de Polignac number, because 655922616766801 - 2¹ = 655922616766799 is a prime.

It is a super-3 number, since 3×655922616766801³ (a number of 45 digits) contains 333 as substring.

Together with 655922616766799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (655922616796801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327961308383400 + 327961308383401.

It is an arithmetic number, because the mean of its divisors is an integer number (327961308383401).

Almost surely, 2^{655922616766801} is an apocalyptic number.

It is an amenable number.

655922616766801 is a deficient number, since it is larger than the sum of its proper divisors (1).

655922616766801 is an equidigital number, since it uses as much as digits as its factorization.

655922616766801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 391910400, while the sum is 70.

The spelling of 655922616766801 in words is "six hundred fifty-five trillion, nine hundred twenty-two billion, six hundred sixteen million, seven hundred sixty-six thousand, eight hundred one".