201451511543 has 8 divisors (see below), whose sum is σ = 204776449920. Its totient is φ = 198140117560.

The previous prime is 201451511479. The next prime is 201451511557. The reversal of 201451511543 is 345115154102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201451511543 - 2⁶ = 201451511479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201451511843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3356105 + ... + 3415602.

It is an arithmetic number, because the mean of its divisors is an integer number (25597056240).

Almost surely, 2^201451511543 is an apocalyptic number.

201451511543 is a deficient number, since it is larger than the sum of its proper divisors (3324938377).

201451511543 is an equidigital number, since it uses as much as digits as its factorization.

201451511543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772197.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 201451511543 its reverse (345115154102), we get a palindrome (546566665645).

The spelling of 201451511543 in words is "two hundred one billion, four hundred fifty-one million, five hundred eleven thousand, five hundred forty-three".