1291243180596 has 48 divisors (see below), whose sum is σ = 3144008321664. Its totient is φ = 411686073216.

The previous prime is 1291243180547. The next prime is 1291243180673. The reversal of 1291243180596 is 6950813421921.

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 in 15 ways as a sum of consecutive naturals, for example, 9814626 + ... + 9945318.

It is an arithmetic number, because the mean of its divisors is an integer number (65500173368).

Almost surely, 2^{1291243180596} is an apocalyptic number.

It is an amenable number.

1291243180596 is an abundant number, since it is smaller than the sum of its proper divisors (1852765141068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1291243180596 is a wasteful number, since it uses less digits than its factorization.

1291243180596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166520 (or 166518 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 1291243180596 in words is "one trillion, two hundred ninety-one billion, two hundred forty-three million, one hundred eighty thousand, five hundred ninety-six".