12740532505 has 8 divisors (see below), whose sum is σ = 15289458624. Its totient is φ = 10191879600.

The previous prime is 12740532499. The next prime is 12740532509. The reversal of 12740532505 is 50523504721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12740532505 - 2²⁵ = 12706978073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12740532509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54300 + ... + 168610.

It is an arithmetic number, because the mean of its divisors is an integer number (1911182328).

Almost surely, 2^12740532505 is an apocalyptic number.

It is an amenable number.

12740532505 is a deficient number, since it is larger than the sum of its proper divisors (2548926119).

12740532505 is a wasteful number, since it uses less digits than its factorization.

12740532505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136607.

The product of its (nonzero) digits is 42000, while the sum is 34.

The spelling of 12740532505 in words is "twelve billion, seven hundred forty million, five hundred thirty-two thousand, five hundred five".