12445505515 has 16 divisors (see below), whose sum is σ = 15307094880. Its totient is φ = 9708340480.

The previous prime is 12445505507. The next prime is 12445505543. The reversal of 12445505515 is 51550554421.

It is not a de Polignac number, because 12445505515 - 2³ = 12445505507 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390357 + ... + 421033.

It is an arithmetic number, because the mean of its divisors is an integer number (956693430).

Almost surely, 2^12445505515 is an apocalyptic number.

12445505515 is a deficient number, since it is larger than the sum of its proper divisors (2861589365).

12445505515 is a wasteful number, since it uses less digits than its factorization.

12445505515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32702.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 12445505515 in words is "twelve billion, four hundred forty-five million, five hundred five thousand, five hundred fifteen".