12016549784 has 32 divisors (see below), whose sum is σ = 23221598400. Its totient is φ = 5826470400.

The previous prime is 12016549781. The next prime is 12016549793. The reversal of 12016549784 is 48794561021.

It is a happy number.

It is a super-2 number, since 2×12016549784² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12016549781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105617 + ... + 187584.

It is an arithmetic number, because the mean of its divisors is an integer number (725674950).

Almost surely, 2^12016549784 is an apocalyptic number.

It is an amenable number.

12016549784 is a deficient number, since it is larger than the sum of its proper divisors (11205048616).

12016549784 is a wasteful number, since it uses less digits than its factorization.

12016549784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293363 (or 293359 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 12016549784 in words is "twelve billion, sixteen million, five hundred forty-nine thousand, seven hundred eighty-four".