12607721775 has 36 divisors (see below), whose sum is σ = 24634729080. Its totient is φ = 6112833600.

The previous prime is 12607721759. The next prime is 12607721807. The reversal of 12607721775 is 57712770621.

12607721775 is a `hidden beast` number, since 12 + 607 + 7 + 21 + 7 + 7 + 5 = 666.

It is not a de Polignac number, because 12607721775 - 2⁴ = 12607721759 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12607721775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2544540 + ... + 2549489.

It is an arithmetic number, because the mean of its divisors is an integer number (684298030).

Almost surely, 2^12607721775 is an apocalyptic number.

12607721775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12607721775 is a deficient number, since it is larger than the sum of its proper divisors (12027007305).

12607721775 is a wasteful number, since it uses less digits than its factorization.

12607721775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094056 (or 5094048 counting only the distinct ones).

The product of its (nonzero) digits is 288120, while the sum is 45.

The spelling of 12607721775 in words is "twelve billion, six hundred seven million, seven hundred twenty-one thousand, seven hundred seventy-five".