201043321951 has 2 divisors, whose sum is σ = 201043321952. Its totient is φ = 201043321950.

The previous prime is 201043321939. The next prime is 201043321979. The reversal of 201043321951 is 159123340102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201043321951 - 2⁹ = 201043321439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201043321901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100521660975 + 100521660976.

It is an arithmetic number, because the mean of its divisors is an integer number (100521660976).

Almost surely, 2^201043321951 is an apocalyptic number.

201043321951 is a deficient number, since it is larger than the sum of its proper divisors (1).

201043321951 is an equidigital number, since it uses as much as digits as its factorization.

201043321951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 201043321951 in words is "two hundred one billion, forty-three million, three hundred twenty-one thousand, nine hundred fifty-one".