1205738143912 has 8 divisors (see below), whose sum is σ = 2260759019850. Its totient is φ = 602869071952.

The previous prime is 1205738143879. The next prime is 1205738143921. The reversal of 1205738143912 is 2193418375021.

It can be written as a sum of positive squares in only one way, i.e., 1132960132836 + 72778011076 = 1064406^2 + 269774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75358633987 + ... + 75358634002.

Almost surely, 2^{1205738143912} is an apocalyptic number.

It is an amenable number.

1205738143912 is a deficient number, since it is larger than the sum of its proper divisors (1055020875938).

1205738143912 is a wasteful number, since it uses less digits than its factorization.

1205738143912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150717267995 (or 150717267991 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 1205738143912 in words is "one trillion, two hundred five billion, seven hundred thirty-eight million, one hundred forty-three thousand, nine hundred twelve".