203640644002273 has 2 divisors, whose sum is σ = 203640644002274. Its totient is φ = 203640644002272.

The previous prime is 203640644002247. The next prime is 203640644002303. The reversal of 203640644002273 is 372200446046302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158600599630929 + 45040044371344 = 12593673^2 + 6711188^2 .

It is a cyclic number.

It is not a de Polignac number, because 203640644002273 - 2⁹ = 203640644001761 is a prime.

It is not a weakly prime, because it can be changed into another prime (203640644002223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101820322001136 + 101820322001137.

It is an arithmetic number, because the mean of its divisors is an integer number (101820322001137).

Almost surely, 2^{203640644002273} is an apocalyptic number.

It is an amenable number.

203640644002273 is a deficient number, since it is larger than the sum of its proper divisors (1).

203640644002273 is an equidigital number, since it uses as much as digits as its factorization.

203640644002273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 43.

The spelling of 203640644002273 in words is "two hundred three trillion, six hundred forty billion, six hundred forty-four million, two thousand, two hundred seventy-three".