12099505672 has 64 divisors (see below), whose sum is σ = 25327843200. Its totient is φ = 5392189440.

The previous prime is 12099505667. The next prime is 12099505673. The reversal of 12099505672 is 27650599021.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (12099505673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184888 + ... + 241624.

It is an arithmetic number, because the mean of its divisors is an integer number (395747550).

Almost surely, 2^12099505672 is an apocalyptic number.

It is an amenable number.

12099505672 is an abundant number, since it is smaller than the sum of its proper divisors (13228337528).

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

12099505672 is a wasteful number, since it uses less digits than its factorization.

12099505672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56846 (or 56842 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 12099505672 in words is "twelve billion, ninety-nine million, five hundred five thousand, six hundred seventy-two".