1179340997721 has 16 divisors (see below), whose sum is σ = 1623363571200. Its totient is φ = 760778645760.

The previous prime is 1179340997717. The next prime is 1179340997749. The reversal of 1179340997721 is 1277990439711.

It is not a de Polignac number, because 1179340997721 - 2² = 1179340997717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1179340997711) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 106431 + ... + 1539483.

It is an arithmetic number, because the mean of its divisors is an integer number (101460223200).

Almost surely, 2^{1179340997721} is an apocalyptic number.

It is an amenable number.

1179340997721 is a deficient number, since it is larger than the sum of its proper divisors (444022573479).

1179340997721 is a wasteful number, since it uses less digits than its factorization.

1179340997721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441936.

The product of its (nonzero) digits is 6001128, while the sum is 60.

The spelling of 1179340997721 in words is "one trillion, one hundred seventy-nine billion, three hundred forty million, nine hundred ninety-seven thousand, seven hundred twenty-one".