1391040035968 has 256 divisors, whose sum is σ = 3304381392000. Its totient is φ = 576179896320.

The previous prime is 1391040035953. The next prime is 1391040036091. The reversal of 1391040035968 is 8695300401931.

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 31 ways as a sum of consecutive naturals, for example, 214895580 + ... + 214902052.

Almost surely, 2^{1391040035968} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391040035968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652190696000).

1391040035968 is an abundant number, since it is smaller than the sum of its proper divisors (1913341356032).

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

1391040035968 is a wasteful number, since it uses less digits than its factorization.

1391040035968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823 (or 6811 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 1391040035968 in words is "one trillion, three hundred ninety-one billion, forty million, thirty-five thousand, nine hundred sixty-eight".