205842765412730 has 16 divisors (see below), whose sum is σ = 379133651644704. Its totient is φ = 80422289742480.

The previous prime is 205842765412717. The next prime is 205842765412751. The reversal of 205842765412730 is 37214567248502.

It is a happy 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, 239352052376 + ... + 239352053235.

It is an arithmetic number, because the mean of its divisors is an integer number (23695853227794).

Almost surely, 2^{205842765412730} is an apocalyptic number.

205842765412730 is a deficient number, since it is larger than the sum of its proper divisors (173290886231974).

205842765412730 is a wasteful number, since it uses less digits than its factorization.

205842765412730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478704105661.

The product of its (nonzero) digits is 22579200, while the sum is 56.

The spelling of 205842765412730 in words is "two hundred five trillion, eight hundred forty-two billion, seven hundred sixty-five million, four hundred twelve thousand, seven hundred thirty".