383626655498861 has 2 divisors, whose sum is σ = 383626655498862. Its totient is φ = 383626655498860.

The previous prime is 383626655498839. The next prime is 383626655498869. The reversal of 383626655498861 is 168894556626383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332987861682025 + 50638793816836 = 18247955^2 + 7116094^2 .

It is a cyclic number.

It is not a de Polignac number, because 383626655498861 - 2¹⁰ = 383626655497837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383626655498869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191813327749430 + 191813327749431.

It is an arithmetic number, because the mean of its divisors is an integer number (191813327749431).

Almost surely, 2^{383626655498861} is an apocalyptic number.

It is an amenable number.

383626655498861 is a deficient number, since it is larger than the sum of its proper divisors (1).

383626655498861 is an equidigital number, since it uses as much as digits as its factorization.

383626655498861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10749542400, while the sum is 80.

The spelling of 383626655498861 in words is "three hundred eighty-three trillion, six hundred twenty-six billion, six hundred fifty-five million, four hundred ninety-eight thousand, eight hundred sixty-one".