205532454151 has 4 divisors (see below), whose sum is σ = 205533374904. Its totient is φ = 205531533400.

The previous prime is 205532454143. The next prime is 205532454241. The reversal of 205532454151 is 151454235502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 205532454151 - 2³ = 205532454143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205532454151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205532454131) 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, 110061 + ... + 650521.

It is an arithmetic number, because the mean of its divisors is an integer number (51383343726).

Almost surely, 2^205532454151 is an apocalyptic number.

205532454151 is a deficient number, since it is larger than the sum of its proper divisors (920753).

205532454151 is an equidigital number, since it uses as much as digits as its factorization.

205532454151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920752.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 205532454151 its reverse (151454235502), we get a palindrome (356986689653).

The spelling of 205532454151 in words is "two hundred five billion, five hundred thirty-two million, four hundred fifty-four thousand, one hundred fifty-one".