205145331331530 has 32 divisors (see below), whose sum is σ = 492365110572288. Its totient is φ = 54703608868800.

The previous prime is 205145331331481. The next prime is 205145331331571. The reversal of 205145331331530 is 35133133541502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112380706 + ... + 114191565.

It is an arithmetic number, because the mean of its divisors is an integer number (15386409705384).

Almost surely, 2^{205145331331530} is an apocalyptic number.

205145331331530 is an abundant number, since it is smaller than the sum of its proper divisors (287219779240758).

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

205145331331530 is a wasteful number, since it uses less digits than its factorization.

205145331331530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226602462.

The product of its (nonzero) digits is 243000, while the sum is 39.

The spelling of 205145331331530 in words is "two hundred five trillion, one hundred forty-five billion, three hundred thirty-one million, three hundred thirty-one thousand, five hundred thirty".