205738708755 has 16 divisors (see below), whose sum is σ = 331361950464. Its totient is φ = 109000639200.

The previous prime is 205738708753. The next prime is 205738708759. The reversal of 205738708755 is 557807837502.

It is not a de Polignac number, because 205738708755 - 2¹ = 205738708753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205738708695 and 205738708704.

It is not an unprimeable number, because it can be changed into a prime (205738708753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45414669 + ... + 45419198.

It is an arithmetic number, because the mean of its divisors is an integer number (20710121904).

Almost surely, 2^205738708755 is an apocalyptic number.

205738708755 is a deficient number, since it is larger than the sum of its proper divisors (125623241709).

205738708755 is a wasteful number, since it uses less digits than its factorization.

205738708755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90834026.

The product of its (nonzero) digits is 16464000, while the sum is 57.

The spelling of 205738708755 in words is "two hundred five billion, seven hundred thirty-eight million, seven hundred eight thousand, seven hundred fifty-five".