1161144240330 has 32 divisors (see below), whose sum is σ = 2825996128128. Its totient is φ = 305277358400.

The previous prime is 1161144240299. The next prime is 1161144240331. The reversal of 1161144240330 is 330424411611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1161144240331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272566941 + ... + 272571200.

It is an arithmetic number, because the mean of its divisors is an integer number (88312379004).

Almost surely, 2^{1161144240330} is an apocalyptic number.

1161144240330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161144240330 is an abundant number, since it is smaller than the sum of its proper divisors (1664851887798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161144240330 is a wasteful number, since it uses less digits than its factorization.

1161144240330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545138222.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 1161144240330 its reverse (330424411611), we get a palindrome (1491568651941).

The spelling of 1161144240330 in words is "one trillion, one hundred sixty-one billion, one hundred forty-four million, two hundred forty thousand, three hundred thirty".