1268161795584 has 200 divisors, whose sum is σ = 3799553844240. Its totient is φ = 421109673984.

The previous prime is 1268161795547. The next prime is 1268161795591. The reversal of 1268161795584 is 4855971618621.

1268161795584 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 1 + 6 + 1 + 79 + 558 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10849002 + ... + 10965270.

Almost surely, 2^{1268161795584} 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 1268161795584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1899776922120).

1268161795584 is an abundant number, since it is smaller than the sum of its proper divisors (2531392048656).

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

1268161795584 is an equidigital number, since it uses as much as digits as its factorization.

1268161795584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116562 (or 116537 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The spelling of 1268161795584 in words is "one trillion, two hundred sixty-eight billion, one hundred sixty-one million, seven hundred ninety-five thousand, five hundred eighty-four".