1165501661150 has 24 divisors (see below), whose sum is σ = 2168630633280. Its totient is φ = 466029149760.

The previous prime is 1165501661089. The next prime is 1165501661161. The reversal of 1165501661150 is 511661055611.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4150559 + ... + 4422458.

It is an arithmetic number, because the mean of its divisors is an integer number (90359609720).

Almost surely, 2^{1165501661150} is an apocalyptic number.

1165501661150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165501661150 is a deficient number, since it is larger than the sum of its proper divisors (1003128972130).

1165501661150 is a wasteful number, since it uses less digits than its factorization.

1165501661150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8575748 (or 8575743 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1165501661150 in words is "one trillion, one hundred sixty-five billion, five hundred one million, six hundred sixty-one thousand, one hundred fifty".