12047406636 has 24 divisors (see below), whose sum is σ = 28222617024. Its totient is φ = 3999802000.

The previous prime is 12047406587. The next prime is 12047406641. The reversal of 12047406636 is 63660474021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12047406594 and 12047406603.

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, 1996890 + ... + 2002913.

It is an arithmetic number, because the mean of its divisors is an integer number (1175942376).

Almost surely, 2^12047406636 is an apocalyptic number.

It is an amenable number.

12047406636 is an abundant number, since it is smaller than the sum of its proper divisors (16175210388).

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

12047406636 is a wasteful number, since it uses less digits than its factorization.

12047406636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000061 (or 4000059 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 12047406636 in words is "twelve billion, forty-seven million, four hundred six thousand, six hundred thirty-six".