205240330155000 has 160 divisors (see below), whose sum is σ = 732766619122560. Its totient is φ = 46912075440000.

The previous prime is 205240330154969. The next prime is 205240330155017. The reversal of 205240330155000 is 551033042502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 977229906 + ... + 977439905.

It is an arithmetic number, because the mean of its divisors is an integer number (4579791369516).

Almost surely, 2^{205240330155000} is an apocalyptic number.

205240330155000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205240330155000 is an abundant number, since it is smaller than the sum of its proper divisors (527526288967560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205240330155000 is a wasteful number, since it uses less digits than its factorization.

205240330155000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954669847 (or 1954669828 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 205240330155000 its reverse (551033042502), we get a palindrome (205791363197502).

The spelling of 205240330155000 in words is "two hundred five trillion, two hundred forty billion, three hundred thirty million, one hundred fifty-five thousand".