12580815807 has 48 divisors (see below), whose sum is σ = 21955852800. Its totient is φ = 7097978160.

The previous prime is 12580815791. The next prime is 12580815827. The reversal of 12580815807 is 70851808521.

12580815807 is a `hidden beast` number, since 12 + 58 + 0 + 8 + 1 + 580 + 7 = 666.

It is not a de Polignac number, because 12580815807 - 2⁴ = 12580815791 is a prime.

It is a super-2 number, since 2×12580815807² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12580815827) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 44332 + ... + 164702.

It is an arithmetic number, because the mean of its divisors is an integer number (457413600).

Almost surely, 2^12580815807 is an apocalyptic number.

12580815807 is a deficient number, since it is larger than the sum of its proper divisors (9375036993).

12580815807 is a wasteful number, since it uses less digits than its factorization.

12580815807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120473 (or 120460 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The spelling of 12580815807 in words is "twelve billion, five hundred eighty million, eight hundred fifteen thousand, eight hundred seven".