12091009010850 has 768 divisors, whose sum is σ = 43390080000000. Its totient is φ = 2400664780800.

The previous prime is 12091009010837. The next prime is 12091009010893. The reversal of 12091009010850 is 5801090019021.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2986169626 + ... + 2986173674.

It is an arithmetic number, because the mean of its divisors is an integer number (56497500000).

Almost surely, 2^{12091009010850} is an apocalyptic number.

12091009010850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12091009010850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21695040000000).

12091009010850 is an abundant number, since it is smaller than the sum of its proper divisors (31299070989150).

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

12091009010850 is a wasteful number, since it uses less digits than its factorization.

12091009010850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360 (or 5349 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

Adding to 12091009010850 its reverse (5801090019021), we get a palindrome (17892099029871).

The spelling of 12091009010850 in words is "twelve trillion, ninety-one billion, nine million, ten thousand, eight hundred fifty".