6485538021587 has 4 divisors (see below), whose sum is σ = 6486258726000. Its totient is φ = 6484817317176.

The previous prime is 6485538021533. The next prime is 6485538021653. The reversal of 6485538021587 is 7851208355846.

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

It is a cyclic number.

It is not a de Polignac number, because 6485538021587 - 2⁸ = 6485538021331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6485538071587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360338708 + ... + 360356705.

It is an arithmetic number, because the mean of its divisors is an integer number (1621564681500).

Almost surely, 2^{6485538021587} is an apocalyptic number.

6485538021587 is a deficient number, since it is larger than the sum of its proper divisors (720704413).

6485538021587 is an equidigital number, since it uses as much as digits as its factorization.

6485538021587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720704412.

The product of its (nonzero) digits is 64512000, while the sum is 62.

The spelling of 6485538021587 in words is "six trillion, four hundred eighty-five billion, five hundred thirty-eight million, twenty-one thousand, five hundred eighty-seven".