1291168599612 has 96 divisors (see below), whose sum is σ = 3053371749120. Its totient is φ = 424626908160.

The previous prime is 1291168599587. The next prime is 1291168599613. The reversal of 1291168599612 is 2169958611921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291168599613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297707908 + ... + 297712244.

It is an arithmetic number, because the mean of its divisors is an integer number (31805955720).

Almost surely, 2^{1291168599612} is an apocalyptic number.

1291168599612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1291168599612 is an abundant number, since it is smaller than the sum of its proper divisors (1762203149508).

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

1291168599612 is a wasteful number, since it uses less digits than its factorization.

1291168599612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531 (or 5529 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 60.

The spelling of 1291168599612 in words is "one trillion, two hundred ninety-one billion, one hundred sixty-eight million, five hundred ninety-nine thousand, six hundred twelve".