205340224015451 has 16 divisors (see below), whose sum is σ = 237078375206400. Its totient is φ = 174204840423168.

The previous prime is 205340224015429. The next prime is 205340224015463. The reversal of 205340224015451 is 154510422043502.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205340224015451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205340224015351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74021621 + ... + 76745558.

It is an arithmetic number, because the mean of its divisors is an integer number (14817398450400).

Almost surely, 2^{205340224015451} is an apocalyptic number.

205340224015451 is a deficient number, since it is larger than the sum of its proper divisors (31738151190949).

205340224015451 is a wasteful number, since it uses less digits than its factorization.

205340224015451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150769178.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 205340224015451 its reverse (154510422043502), we get a palindrome (359850646058953).

The spelling of 205340224015451 in words is "two hundred five trillion, three hundred forty billion, two hundred twenty-four million, fifteen thousand, four hundred fifty-one".