12731767560 has 48 divisors (see below), whose sum is σ = 41378245740. Its totient is φ = 3395137920.

The previous prime is 12731767541. The next prime is 12731767567. The reversal of 12731767560 is 6576713721.

12731767560 is a `hidden beast` number, since 1 + 2 + 73 + 17 + 6 + 7 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12144480804 + 587286756 = 110202^2 + 24234^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12731767567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17682651 + ... + 17683370.

Almost surely, 2^12731767560 is an apocalyptic number.

12731767560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12731767560 is an abundant number, since it is smaller than the sum of its proper divisors (28646478180).

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

12731767560 is a wasteful number, since it uses less digits than its factorization.

12731767560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35366038 (or 35366031 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 12731767560 in words is "twelve billion, seven hundred thirty-one million, seven hundred sixty-seven thousand, five hundred sixty".