12640277512530 has 64 divisors (see below), whose sum is σ = 33709791185280. Its totient is φ = 3370502221632.

The previous prime is 12640277512453. The next prime is 12640277512589. The reversal of 12640277512530 is 3521577204621.

12640277512530 is a `hidden beast` number, since 1 + 2 + 6 + 40 + 2 + 7 + 75 + 1 + 2 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 31 ways as a sum of consecutive naturals, for example, 2184397 + ... + 5481983.

It is an arithmetic number, because the mean of its divisors is an integer number (526715487270).

Almost surely, 2^{12640277512530} is an apocalyptic number.

12640277512530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12640277512530 is an abundant number, since it is smaller than the sum of its proper divisors (21069513672750).

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

12640277512530 is a wasteful number, since it uses less digits than its factorization.

12640277512530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311800 (or 3311794 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 12640277512530 in words is "twelve trillion, six hundred forty billion, two hundred seventy-seven million, five hundred twelve thousand, five hundred thirty".