4020204201973 has 2 divisors, whose sum is σ = 4020204201974. Its totient is φ = 4020204201972.

The previous prime is 4020204201947. The next prime is 4020204202033. The reversal of 4020204201973 is 3791024020204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4006890965284 + 13313236689 = 2001722^2 + 115383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020204201973 is a prime.

It is a super-2 number, since 2×4020204201973² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020204201073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010102100986 + 2010102100987.

It is an arithmetic number, because the mean of its divisors is an integer number (2010102100987).

Almost surely, 2^{4020204201973} is an apocalyptic number.

It is an amenable number.

4020204201973 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020204201973 is an equidigital number, since it uses as much as digits as its factorization.

4020204201973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 4020204201973 in words is "four trillion, twenty billion, two hundred four million, two hundred one thousand, nine hundred seventy-three".