205230736615 has 32 divisors (see below), whose sum is σ = 257952522240. Its totient is φ = 156455464704.

The previous prime is 205230736589. The next prime is 205230736619. The reversal of 205230736615 is 516637032502.

It is a cyclic number.

It is not a de Polignac number, because 205230736615 - 2¹⁷ = 205230605543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205230736619) 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, 89346147 + ... + 89348443.

It is an arithmetic number, because the mean of its divisors is an integer number (8061016320).

Almost surely, 2^205230736615 is an apocalyptic number.

205230736615 is a deficient number, since it is larger than the sum of its proper divisors (52721785625).

205230736615 is a wasteful number, since it uses less digits than its factorization.

205230736615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 205230736615 in words is "two hundred five billion, two hundred thirty million, seven hundred thirty-six thousand, six hundred fifteen".