1161151190099 has 4 divisors (see below), whose sum is σ = 1166654276520. Its totient is φ = 1155648103680.

The previous prime is 1161151190063. The next prime is 1161151190161. The reversal of 1161151190099 is 9900911511611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1161151190099 - 2³⁶ = 1092431713363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161151190029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2751542894 + ... + 2751543315.

It is an arithmetic number, because the mean of its divisors is an integer number (291663569130).

Almost surely, 2^{1161151190099} is an apocalyptic number.

1161151190099 is a deficient number, since it is larger than the sum of its proper divisors (5503086421).

1161151190099 is an equidigital number, since it uses as much as digits as its factorization.

1161151190099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503086420.

The product of its (nonzero) digits is 21870, while the sum is 44.

The spelling of 1161151190099 in words is "one trillion, one hundred sixty-one billion, one hundred fifty-one million, one hundred ninety thousand, ninety-nine".