648587815503 has 16 divisors (see below), whose sum is σ = 888238896096. Its totient is φ = 420666480000.

The previous prime is 648587815501. The next prime is 648587815517. The reversal of 648587815503 is 305518785846.

It is not a de Polignac number, because 648587815503 - 2¹ = 648587815501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648587815501) 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 15 ways as a sum of consecutive naturals, for example, 951753 + ... + 1484253.

It is an arithmetic number, because the mean of its divisors is an integer number (55514931006).

Almost surely, 2^648587815503 is an apocalyptic number.

648587815503 is a deficient number, since it is larger than the sum of its proper divisors (239651080593).

648587815503 is a wasteful number, since it uses less digits than its factorization.

648587815503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543514.

The product of its (nonzero) digits is 32256000, while the sum is 60.

The spelling of 648587815503 in words is "six hundred forty-eight billion, five hundred eighty-seven million, eight hundred fifteen thousand, five hundred three".