12186747506 has 16 divisors (see below), whose sum is σ = 18583810560. Its totient is φ = 5992187280.

The previous prime is 12186747479. The next prime is 12186747523. The reversal of 12186747506 is 60574768121.

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, 812285 + ... + 827151.

It is an arithmetic number, because the mean of its divisors is an integer number (1161488160).

Almost surely, 2^12186747506 is an apocalyptic number.

12186747506 is a deficient number, since it is larger than the sum of its proper divisors (6397063054).

12186747506 is a wasteful number, since it uses less digits than its factorization.

12186747506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21649.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 12186747506 in words is "twelve billion, one hundred eighty-six million, seven hundred forty-seven thousand, five hundred six".