1161318150973 has 4 divisors (see below), whose sum is σ = 1161359332960. Its totient is φ = 1161276968988.

The previous prime is 1161318150959. The next prime is 1161318150989. The reversal of 1161318150973 is 3790518131611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1161318150973 - 2²⁵ = 1161284596541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161318159973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20548665 + ... + 20605102.

It is an arithmetic number, because the mean of its divisors is an integer number (290339833240).

Almost surely, 2^{1161318150973} is an apocalyptic number.

It is an amenable number.

1161318150973 is a deficient number, since it is larger than the sum of its proper divisors (41181987).

1161318150973 is an equidigital number, since it uses as much as digits as its factorization.

1161318150973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41181986.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 1161318150973 in words is "one trillion, one hundred sixty-one billion, three hundred eighteen million, one hundred fifty thousand, nine hundred seventy-three".