12011053652550 has 72 divisors (see below), whose sum is σ = 32410613467440. Its totient is φ = 3188960942400.

The previous prime is 12011053652519. The next prime is 12011053652581. The reversal of 12011053652550 is 5525635011021.

12011053652550 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 1 + 0 + 53 + 6 + 52 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (12011053652519) and next prime (12011053652581).

It is a super-2 number, since 2×12011053652550² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58174746 + ... + 58380845.

It is an arithmetic number, because the mean of its divisors is an integer number (450147409270).

Almost surely, 2^{12011053652550} is an apocalyptic number.

12011053652550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12011053652550 is an abundant number, since it is smaller than the sum of its proper divisors (20399559814890).

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

12011053652550 is a wasteful number, since it uses less digits than its factorization.

12011053652550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116555838 (or 116555830 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 12011053652550 its reverse (5525635011021), we get a palindrome (17536688663571).

The spelling of 12011053652550 in words is "twelve trillion, eleven billion, fifty-three million, six hundred fifty-two thousand, five hundred fifty".