1174319581721 has 16 divisors (see below), whose sum is σ = 1379661884160. Its totient is φ = 985413237120.

The previous prime is 1174319581709. The next prime is 1174319581733. The reversal of 1174319581721 is 1271859134711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1174319581709) and next prime (1174319581733).

It is not a de Polignac number, because 1174319581721 - 2¹⁴ = 1174319565337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1174319581721.

It is not an unprimeable number, because it can be changed into a prime (1174319581741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5521685 + ... + 5730413.

It is an arithmetic number, because the mean of its divisors is an integer number (86228867760).

Almost surely, 2^{1174319581721} is an apocalyptic number.

1174319581721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1174319581721 is a deficient number, since it is larger than the sum of its proper divisors (205342302439).

1174319581721 is a wasteful number, since it uses less digits than its factorization.

1174319581721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248096.

The product of its digits is 423360, while the sum is 50.

The spelling of 1174319581721 in words is "one trillion, one hundred seventy-four billion, three hundred nineteen million, five hundred eighty-one thousand, seven hundred twenty-one".