36853647221 has 2 divisors, whose sum is σ = 36853647222. Its totient is φ = 36853647220.

The previous prime is 36853647197. The next prime is 36853647269. The reversal of 36853647221 is 12274635863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24194247025 + 12659400196 = 155545^2 + 112514^2 .

It is a cyclic number.

It is not a de Polignac number, because 36853647221 - 2¹⁴ = 36853630837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36853647121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18426823610 + 18426823611.

It is an arithmetic number, because the mean of its divisors is an integer number (18426823611).

Almost surely, 2^36853647221 is an apocalyptic number.

It is an amenable number.

36853647221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36853647221 is an equidigital number, since it uses as much as digits as its factorization.

36853647221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 47.

The spelling of 36853647221 in words is "thirty-six billion, eight hundred fifty-three million, six hundred forty-seven thousand, two hundred twenty-one".