4540521662437 has 4 divisors (see below), whose sum is σ = 4544011688076. Its totient is φ = 4537031636800.

The previous prime is 4540521662423. The next prime is 4540521662449. The reversal of 4540521662437 is 7342661250454.

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 1586526661476 + 2953995000961 = 1259574^2 + 1718719^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540521662437 - 2¹⁹ = 4540521138149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4540521662737) 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, 1745010868 + ... + 1745013469.

It is an arithmetic number, because the mean of its divisors is an integer number (1136002922019).

Almost surely, 2^{4540521662437} is an apocalyptic number.

It is an amenable number.

4540521662437 is a deficient number, since it is larger than the sum of its proper divisors (3490025639).

4540521662437 is a wasteful number, since it uses less digits than its factorization.

4540521662437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490025638.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 4540521662437 in words is "four trillion, five hundred forty billion, five hundred twenty-one million, six hundred sixty-two thousand, four hundred thirty-seven".