1291677925512 has 48 divisors (see below), whose sum is σ = 3496702087440. Its totient is φ = 397439360448.

The previous prime is 1291677925493. The next prime is 1291677925541. The reversal of 1291677925512 is 2155297761921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159226458 + ... + 159234569.

It is an arithmetic number, because the mean of its divisors is an integer number (72847960155).

Almost surely, 2^{1291677925512} is an apocalyptic number.

1291677925512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1291677925512 is an abundant number, since it is smaller than the sum of its proper divisors (2205024161928).

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

1291677925512 is a wasteful number, since it uses less digits than its factorization.

1291677925512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318461062 (or 318461045 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 57.

The spelling of 1291677925512 in words is "one trillion, two hundred ninety-one billion, six hundred seventy-seven million, nine hundred twenty-five thousand, five hundred twelve".