12520430615 has 32 divisors (see below), whose sum is σ = 19167515136. Its totient is φ = 7623423360.

The previous prime is 12520430599. The next prime is 12520430617. The reversal of 12520430615 is 51603402521.

12520430615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12520430615 - 2⁴ = 12520430599 is a prime.

It is a super-2 number, since 2×12520430615² (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 (12520430617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361592 + ... + 394701.

It is an arithmetic number, because the mean of its divisors is an integer number (598984848).

Almost surely, 2^12520430615 is an apocalyptic number.

12520430615 is a deficient number, since it is larger than the sum of its proper divisors (6647084521).

12520430615 is a wasteful number, since it uses less digits than its factorization.

12520430615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756359.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 12520430615 in words is "twelve billion, five hundred twenty million, four hundred thirty thousand, six hundred fifteen".