205345011754 has 8 divisors (see below), whose sum is σ = 308019835620. Its totient is φ = 102671733216.

The previous prime is 205345011691. The next prime is 205345011757. The reversal of 205345011754 is 457110543502.

205345011754 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161904031129 + 43440980625 = 402373^2 + 208425^2 .

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

It is not an unprimeable number, because it can be changed into a prime (205345011757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39942 + ... + 642094.

Almost surely, 2^205345011754 is an apocalyptic number.

205345011754 is a deficient number, since it is larger than the sum of its proper divisors (102674823866).

205345011754 is a wasteful number, since it uses less digits than its factorization.

205345011754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772664.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 205345011754 in words is "two hundred five billion, three hundred forty-five million, eleven thousand, seven hundred fifty-four".