12541604122645 has 16 divisors (see below), whose sum is σ = 16645655038320. Its totient is φ = 9011181671424.

The previous prime is 12541604122603. The next prime is 12541604122661. The reversal of 12541604122645 is 54622140614521.

It can be written as a sum of positive squares in 8 ways, for example, as 245030940036 + 12296573182609 = 495006^2 + 3506647^2 .

It is a cyclic number.

It is not a de Polignac number, because 12541604122645 - 2¹¹ = 12541604120597 is a prime.

It is a congruent number.

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, 2607399700 + ... + 2607404509.

It is an arithmetic number, because the mean of its divisors is an integer number (1040353439895).

Almost surely, 2^{12541604122645} is an apocalyptic number.

It is an amenable number.

12541604122645 is a deficient number, since it is larger than the sum of its proper divisors (4104050915675).

12541604122645 is a wasteful number, since it uses less digits than its factorization.

12541604122645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214804264.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 12541604122645 in words is "twelve trillion, five hundred forty-one billion, six hundred four million, one hundred twenty-two thousand, six hundred forty-five".