1161945720001 has 8 divisors (see below), whose sum is σ = 1267586561664. Its totient is φ = 1056306447120.

The previous prime is 1161945719989. The next prime is 1161945720041. The reversal of 1161945720001 is 1000275491611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161945720001 - 2¹⁷ = 1161945588929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161945720041) 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 7 ways as a sum of consecutive naturals, for example, 1593711 + ... + 2205403.

It is an arithmetic number, because the mean of its divisors is an integer number (158448320208).

Almost surely, 2^{1161945720001} is an apocalyptic number.

1161945720001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1161945720001 is a deficient number, since it is larger than the sum of its proper divisors (105640841663).

1161945720001 is a wasteful number, since it uses less digits than its factorization.

1161945720001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784391.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 1161945720001 in words is "one trillion, one hundred sixty-one billion, nine hundred forty-five million, seven hundred twenty thousand, one".