12740155547 has 4 divisors (see below), whose sum is σ = 14560177776. Its totient is φ = 10920133320.

The previous prime is 12740155531. The next prime is 12740155553. The reversal of 12740155547 is 74555104721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74555104721 = 241 ⋅309357281.

It is a cyclic number.

It is not a de Polignac number, because 12740155547 - 2⁴ = 12740155531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12740155517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910011104 + ... + 910011117.

It is an arithmetic number, because the mean of its divisors is an integer number (3640044444).

Almost surely, 2^12740155547 is an apocalyptic number.

12740155547 is a deficient number, since it is larger than the sum of its proper divisors (1820022229).

12740155547 is an equidigital number, since it uses as much as digits as its factorization.

12740155547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820022228.

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 12740155547 in words is "twelve billion, seven hundred forty million, one hundred fifty-five thousand, five hundred forty-seven".