205334542151 has 4 divisors (see below), whose sum is σ = 207218345400. Its totient is φ = 203450738904.

The previous prime is 205334542141. The next prime is 205334542157. The reversal of 205334542151 is 151245433502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205334542151 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 (205334542157) 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, 941901461 + ... + 941901678.

It is an arithmetic number, because the mean of its divisors is an integer number (51804586350).

Almost surely, 2^205334542151 is an apocalyptic number.

205334542151 is a deficient number, since it is larger than the sum of its proper divisors (1883803249).

205334542151 is a wasteful number, since it uses less digits than its factorization.

205334542151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883803248.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 205334542151 its reverse (151245433502), we get a palindrome (356579975653).

The spelling of 205334542151 in words is "two hundred five billion, three hundred thirty-four million, five hundred forty-two thousand, one hundred fifty-one".