205949611312 has 10 divisors (see below), whose sum is σ = 399027371948. Its totient is φ = 102974805648.

The previous prime is 205949611297. The next prime is 205949611339. The reversal of 205949611312 is 213116949502.

It is a super-2 number, since 2×205949611312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435925338 + ... + 6435925369.

Almost surely, 2^205949611312 is an apocalyptic number.

It is an amenable number.

205949611312 is a deficient number, since it is larger than the sum of its proper divisors (193077760636).

205949611312 is a wasteful number, since it uses less digits than its factorization.

205949611312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871850715 (or 12871850709 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 205949611312 in words is "two hundred five billion, nine hundred forty-nine million, six hundred eleven thousand, three hundred twelve".