1291541967608 has 32 divisors (see below), whose sum is σ = 2549192515200. Its totient is φ = 611759871072.

The previous prime is 1291541967587. The next prime is 1291541967629. The reversal of 1291541967608 is 8067691451921.

It is an interprime number because it is at equal distance from previous prime (1291541967587) and next prime (1291541967629).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4265741 + ... + 4558467.

It is an arithmetic number, because the mean of its divisors is an integer number (79662266100).

Almost surely, 2^{1291541967608} is an apocalyptic number.

It is an amenable number.

1291541967608 is a deficient number, since it is larger than the sum of its proper divisors (1257650547592).

1291541967608 is a wasteful number, since it uses less digits than its factorization.

1291541967608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321779 (or 321775 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 1291541967608 in words is "one trillion, two hundred ninety-one billion, five hundred forty-one million, nine hundred sixty-seven thousand, six hundred eight".