1291678775484 has 24 divisors (see below), whose sum is σ = 3014227520640. Its totient is φ = 430515252144.

The previous prime is 1291678775477. The next prime is 1291678775509. The reversal of 1291678775484 is 4845778761921.

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, 5420974 + ... + 5654229.

It is an arithmetic number, because the mean of its divisors is an integer number (125592813360).

Almost surely, 2^{1291678775484} is an apocalyptic number.

It is an amenable number.

1291678775484 is an abundant number, since it is smaller than the sum of its proper divisors (1722548745156).

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

1291678775484 is a wasteful number, since it uses less digits than its factorization.

1291678775484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11084929 (or 11084927 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 69.

The spelling of 1291678775484 in words is "one trillion, two hundred ninety-one billion, six hundred seventy-eight million, seven hundred seventy-five thousand, four hundred eighty-four".