273821090321 has 2 divisors, whose sum is σ = 273821090322. Its totient is φ = 273821090320.

The previous prime is 273821090299. The next prime is 273821090353. The reversal of 273821090321 is 123090128372.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272730439696 + 1090650625 = 522236^2 + 33025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273821090321 is a prime.

It is not a weakly prime, because it can be changed into another prime (273821095321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136910545160 + 136910545161.

It is an arithmetic number, because the mean of its divisors is an integer number (136910545161).

Almost surely, 2^273821090321 is an apocalyptic number.

It is an amenable number.

273821090321 is a deficient number, since it is larger than the sum of its proper divisors (1).

273821090321 is an equidigital number, since it uses as much as digits as its factorization.

273821090321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 273821090321 in words is "two hundred seventy-three billion, eight hundred twenty-one million, ninety thousand, three hundred twenty-one".