205066540635 has 32 divisors (see below), whose sum is σ = 358001724672. Its totient is φ = 99407479680.

The previous prime is 205066540541. The next prime is 205066540649. The reversal of 205066540635 is 536045660502.

It is not a de Polignac number, because 205066540635 - 2⁷ = 205066540507 is a prime.

It is a super-2 number, since 2×205066540635² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 782812 + ... + 1011398.

It is an arithmetic number, because the mean of its divisors is an integer number (11187553896).

Almost surely, 2^205066540635 is an apocalyptic number.

205066540635 is a deficient number, since it is larger than the sum of its proper divisors (152935184037).

205066540635 is a wasteful number, since it uses less digits than its factorization.

205066540635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234043.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 205066540635 in words is "two hundred five billion, sixty-six million, five hundred forty thousand, six hundred thirty-five".