12111650550 has 60 divisors (see below), whose sum is σ = 33652456596. Its totient is φ = 3229772400.

The previous prime is 12111650543. The next prime is 12111650563. The reversal of 12111650550 is 5505611121.

12111650550 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 1 + 650 + 5 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1491216 + ... + 1499315.

Almost surely, 2^12111650550 is an apocalyptic number.

12111650550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111650550 is an abundant number, since it is smaller than the sum of its proper divisors (21540806046).

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

12111650550 is a wasteful number, since it uses less digits than its factorization.

12111650550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990555 (or 2990541 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 12111650550 in words is "twelve billion, one hundred eleven million, six hundred fifty thousand, five hundred fifty".