1161710810218 has 48 divisors (see below), whose sum is σ = 2133942598080. Its totient is φ = 471630491136.

The previous prime is 1161710810209. The next prime is 1161710810251. The reversal of 1161710810218 is 8120180171611.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29785546 + ... + 29824522.

It is an arithmetic number, because the mean of its divisors is an integer number (44457137460).

Almost surely, 2^{1161710810218} is an apocalyptic number.

1161710810218 is a deficient number, since it is larger than the sum of its proper divisors (972231787862).

1161710810218 is a wasteful number, since it uses less digits than its factorization.

1161710810218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55019 (or 55012 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 37.

Adding to 1161710810218 its reverse (8120180171611), we get a palindrome (9281890981829).

The spelling of 1161710810218 in words is "one trillion, one hundred sixty-one billion, seven hundred ten million, eight hundred ten thousand, two hundred eighteen".