12011420616 has 32 divisors (see below), whose sum is σ = 32338440960. Its totient is φ = 3695821632.

The previous prime is 12011420599. The next prime is 12011420623. The reversal of 12011420616 is 61602411021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19248760 + ... + 19249383.

It is an arithmetic number, because the mean of its divisors is an integer number (1010576280).

Almost surely, 2^12011420616 is an apocalyptic number.

It is an amenable number.

12011420616 is an abundant number, since it is smaller than the sum of its proper divisors (20327020344).

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

12011420616 is a wasteful number, since it uses less digits than its factorization.

12011420616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38498165 (or 38498161 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 12011420616 its reverse (61602411021), we get a palindrome (73613831637).

The spelling of 12011420616 in words is "twelve billion, eleven million, four hundred twenty thousand, six hundred sixteen".