12738280506 has 32 divisors (see below), whose sum is σ = 30828781440. Its totient is φ = 3425419776.

The previous prime is 12738280493. The next prime is 12738280519. The reversal of 12738280506 is 60508283721.

It is an interprime number because it is at equal distance from previous prime (12738280493) and next prime (12738280519).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8919651 + ... + 8921078.

It is an arithmetic number, because the mean of its divisors is an integer number (963399420).

Almost surely, 2^12738280506 is an apocalyptic number.

12738280506 is an abundant number, since it is smaller than the sum of its proper divisors (18090500934).

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

12738280506 is a wasteful number, since it uses less digits than its factorization.

12738280506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17840758.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 12738280506 in words is "twelve billion, seven hundred thirty-eight million, two hundred eighty thousand, five hundred six".