4612134447521 has 4 divisors (see below), whose sum is σ = 4654447607700. Its totient is φ = 4569821287344.

The previous prime is 4612134447451. The next prime is 4612134447527. The reversal of 4612134447521 is 1257444312164.

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 3614413147921 + 997721299600 = 1901161^2 + 998860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4612134447521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4612134447527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21156579926 + ... + 21156580143.

It is an arithmetic number, because the mean of its divisors is an integer number (1163611901925).

Almost surely, 2^{4612134447521} is an apocalyptic number.

It is an amenable number.

4612134447521 is a deficient number, since it is larger than the sum of its proper divisors (42313160179).

4612134447521 is a wasteful number, since it uses less digits than its factorization.

4612134447521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42313160178.

The product of its digits is 645120, while the sum is 44.

Adding to 4612134447521 its reverse (1257444312164), we get a palindrome (5869578759685).

The spelling of 4612134447521 in words is "four trillion, six hundred twelve billion, one hundred thirty-four million, four hundred forty-seven thousand, five hundred twenty-one".