11665551516050 has 24 divisors (see below), whose sum is σ = 21698244805296. Its totient is φ = 4666152007440.

The previous prime is 11665551516049. The next prime is 11665551516061. The reversal of 11665551516050 is 5061515556611.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11665551515986 and 11665551516004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1791089 + ... + 5151611.

It is an arithmetic number, because the mean of its divisors is an integer number (904093533554).

Almost surely, 2^{11665551516050} is an apocalyptic number.

11665551516050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11665551516050 is a deficient number, since it is larger than the sum of its proper divisors (10032693289246).

11665551516050 is a wasteful number, since it uses less digits than its factorization.

11665551516050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429962 (or 3429957 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 11665551516050 in words is "eleven trillion, six hundred sixty-five billion, five hundred fifty-one million, five hundred sixteen thousand, fifty".