12721527736 has 16 divisors (see below), whose sum is σ = 23854854240. Its totient is φ = 6360233280.

The previous prime is 12721527713. The next prime is 12721527743. The reversal of 12721527736 is 63772512721.

It is a junction number, because it is equal to n+sod(n) for n = 12721527692 and 12721527701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46956 + ... + 166276.

It is an arithmetic number, because the mean of its divisors is an integer number (1490928390).

Almost surely, 2^12721527736 is an apocalyptic number.

It is an amenable number.

12721527736 is a deficient number, since it is larger than the sum of its proper divisors (11133326504).

12721527736 is a wasteful number, since it uses less digits than its factorization.

12721527736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132654 (or 132650 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The spelling of 12721527736 in words is "twelve billion, seven hundred twenty-one million, five hundred twenty-seven thousand, seven hundred thirty-six".