201543325251 has 4 divisors (see below), whose sum is σ = 268724433672. Its totient is φ = 134362216832.

The previous prime is 201543325229. The next prime is 201543325267. The reversal of 201543325251 is 152523345102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201543325251 - 2⁹ = 201543324739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201543325201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33590554206 + ... + 33590554211.

It is an arithmetic number, because the mean of its divisors is an integer number (67181108418).

Almost surely, 2^201543325251 is an apocalyptic number.

201543325251 is a deficient number, since it is larger than the sum of its proper divisors (67181108421).

201543325251 is an equidigital number, since it uses as much as digits as its factorization.

201543325251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67181108420.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 201543325251 in words is "two hundred one billion, five hundred forty-three million, three hundred twenty-five thousand, two hundred fifty-one".