12921480602585 has 4 divisors (see below), whose sum is σ = 15505776723108. Its totient is φ = 10337184482064.

The previous prime is 12921480602461. The next prime is 12921480602587. The reversal of 12921480602585 is 58520608412921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4042725486409 + 8878755116176 = 2010653^2 + 2979724^2 .

It is a cyclic number.

It is not a de Polignac number, because 12921480602585 - 2¹² = 12921480598489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12921480602587) 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 3 ways as a sum of consecutive naturals, for example, 1292148060254 + ... + 1292148060263.

It is an arithmetic number, because the mean of its divisors is an integer number (3876444180777).

Almost surely, 2^{12921480602585} is an apocalyptic number.

It is an amenable number.

12921480602585 is a deficient number, since it is larger than the sum of its proper divisors (2584296120523).

12921480602585 is an equidigital number, since it uses as much as digits as its factorization.

12921480602585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584296120522.

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 12921480602585 in words is "twelve trillion, nine hundred twenty-one billion, four hundred eighty million, six hundred two thousand, five hundred eighty-five".