1261035466112 has 16 divisors (see below), whose sum is σ = 2512219092900. Its totient is φ = 630517732992.

The previous prime is 1261035466109. The next prime is 1261035466147. The reversal of 1261035466112 is 2116645301621.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4925919662 + ... + 4925919917.

Almost surely, 2^{1261035466112} is an apocalyptic number.

It is an amenable number.

1261035466112 is a deficient number, since it is larger than the sum of its proper divisors (1251183626788).

1261035466112 is an frugal number, since it uses more digits than its factorization.

1261035466112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9851839593 (or 9851839581 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 1261035466112 in words is "one trillion, two hundred sixty-one billion, thirty-five million, four hundred sixty-six thousand, one hundred twelve".