12016781476 has 48 divisors (see below), whose sum is σ = 24155341056. Its totient is φ = 5124023424.

The previous prime is 12016781459. The next prime is 12016781509. The reversal of 12016781476 is 67418761021.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6505185 + ... + 6507031.

It is an arithmetic number, because the mean of its divisors is an integer number (503236272).

Almost surely, 2^12016781476 is an apocalyptic number.

It is an amenable number.

12016781476 is an abundant number, since it is smaller than the sum of its proper divisors (12138559580).

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

12016781476 is a wasteful number, since it uses less digits than its factorization.

12016781476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 12016781476 in words is "twelve billion, sixteen million, seven hundred eighty-one thousand, four hundred seventy-six".