205550000351 has 32 divisors (see below), whose sum is σ = 219229536768. Its totient is φ = 192312869760.

The previous prime is 205550000321. The next prime is 205550000377. The reversal of 205550000351 is 153000055502.

It is not a de Polignac number, because 205550000351 - 2⁶ = 205550000287 is a prime.

It is a super-2 number, since 2×205550000351² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205550000351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205550000321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159217016 + ... + 159218306.

It is an arithmetic number, because the mean of its divisors is an integer number (6850923024).

Almost surely, 2^205550000351 is an apocalyptic number.

205550000351 is a deficient number, since it is larger than the sum of its proper divisors (13679536417).

205550000351 is a wasteful number, since it uses less digits than its factorization.

205550000351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 3750, while the sum is 26.

Adding to 205550000351 its reverse (153000055502), we get a palindrome (358550055853).

The spelling of 205550000351 in words is "two hundred five billion, five hundred fifty million, three hundred fifty-one", and thus it is an aban number.