205151423443 has 8 divisors (see below), whose sum is σ = 212200528896. Its totient is φ = 198129275400.

The previous prime is 205151423431. The next prime is 205151423467. The reversal of 205151423443 is 344324151502.

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 205151423443 - 2¹³ = 205151415251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205151423399 and 205151423408.

It is not an unprimeable number, because it can be changed into a prime (205151423473) 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, 6723871 + ... + 6754312.

It is an arithmetic number, because the mean of its divisors is an integer number (26525066112).

Almost surely, 2^205151423443 is an apocalyptic number.

205151423443 is a deficient number, since it is larger than the sum of its proper divisors (7049105453).

205151423443 is a wasteful number, since it uses less digits than its factorization.

205151423443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13478705.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 205151423443 its reverse (344324151502), we get a palindrome (549475574945).

The spelling of 205151423443 in words is "two hundred five billion, one hundred fifty-one million, four hundred twenty-three thousand, four hundred forty-three".