1291548511112 has 16 divisors (see below), whose sum is σ = 2421716182800. Its totient is φ = 645757529040.

The previous prime is 1291548511111. The next prime is 1291548511147. The reversal of 1291548511112 is 2111158451921.

It is a self number, because there is not a number n which added to its sum of digits gives 1291548511112.

It is not an unprimeable number, because it can be changed into a prime (1291548511111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759562 + ... + 2383097.

It is an arithmetic number, because the mean of its divisors is an integer number (151357261425).

Almost surely, 2^{1291548511112} is an apocalyptic number.

It is an amenable number.

1291548511112 is a deficient number, since it is larger than the sum of its proper divisors (1130167671688).

1291548511112 is a wasteful number, since it uses less digits than its factorization.

1291548511112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181636 (or 4181632 counting only the distinct ones).

The product of its digits is 28800, while the sum is 41.

The spelling of 1291548511112 in words is "one trillion, two hundred ninety-one billion, five hundred forty-eight million, five hundred eleven thousand, one hundred twelve".