13124420524505 has 16 divisors (see below), whose sum is σ = 15758539811280. Its totient is φ = 10493380246272.

The previous prime is 13124420524493. The next prime is 13124420524541. The reversal of 13124420524505 is 50542502442131.

It can be written as a sum of positive squares in 8 ways, for example, as 238732891609 + 12885687632896 = 488603^2 + 3589664^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124420524505 - 2⁴ = 13124420524489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329102627 + ... + 329142503.

It is an arithmetic number, because the mean of its divisors is an integer number (984908738205).

Almost surely, 2^{13124420524505} is an apocalyptic number.

It is an amenable number.

13124420524505 is a deficient number, since it is larger than the sum of its proper divisors (2634119286775).

13124420524505 is a wasteful number, since it uses less digits than its factorization.

13124420524505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76828.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 13124420524505 its reverse (50542502442131), we get a palindrome (63666922966636).

The spelling of 13124420524505 in words is "thirteen trillion, one hundred twenty-four billion, four hundred twenty million, five hundred twenty-four thousand, five hundred five".