205345240126 has 16 divisors (see below), whose sum is σ = 333937800000. Its totient is φ = 94138652448.

The previous prime is 205345240117. The next prime is 205345240181. The reversal of 205345240126 is 621042543502.

It is a junction number, because it is equal to n+sod(n) for n = 205345240091 and 205345240100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26499126 + ... + 26506873.

It is an arithmetic number, because the mean of its divisors is an integer number (20871112500).

Almost surely, 2^205345240126 is an apocalyptic number.

205345240126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

205345240126 is a deficient number, since it is larger than the sum of its proper divisors (128592559874).

205345240126 is a wasteful number, since it uses less digits than its factorization.

205345240126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53006163.

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

Adding to 205345240126 its reverse (621042543502), we get a palindrome (826387783628).

The spelling of 205345240126 in words is "two hundred five billion, three hundred forty-five million, two hundred forty thousand, one hundred twenty-six".