12551521301540 has 48 divisors (see below), whose sum is σ = 28678384810992. Its totient is φ = 4586630455296.

The previous prime is 12551521301521. The next prime is 12551521301569. The reversal of 12551521301540 is 4510312515521.

It can be written as a sum of positive squares in 8 ways, for example, as 36284916196 + 12515236385344 = 190486^2 + 3537688^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12551521301540.

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, 248815409 + ... + 248865848.

It is an arithmetic number, because the mean of its divisors is an integer number (597466350229).

Almost surely, 2^{12551521301540} is an apocalyptic number.

12551521301540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12551521301540 is an abundant number, since it is smaller than the sum of its proper divisors (16126863509452).

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

12551521301540 is a wasteful number, since it uses less digits than its factorization.

12551521301540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497681376 (or 497681374 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 12551521301540 in words is "twelve trillion, five hundred fifty-one billion, five hundred twenty-one million, three hundred one thousand, five hundred forty".