681627002503 has 16 divisors (see below), whose sum is σ = 708434132544. Its totient is φ = 655288185600.

The previous prime is 681627002489. The next prime is 681627002533. The reversal of 681627002503 is 305200726186.

It is a cyclic number.

It is not a de Polignac number, because 681627002503 - 2²⁵ = 681593448071 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 (681627002533) 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, 1632651 + ... + 2007187.

It is an arithmetic number, because the mean of its divisors is an integer number (44277133284).

Almost surely, 2^681627002503 is an apocalyptic number.

681627002503 is a deficient number, since it is larger than the sum of its proper divisors (26807130041).

681627002503 is a wasteful number, since it uses less digits than its factorization.

681627002503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375162.

The product of its (nonzero) digits is 120960, while the sum is 40.

Adding to 681627002503 its reverse (305200726186), we get a palindrome (986827728689).

The spelling of 681627002503 in words is "six hundred eighty-one billion, six hundred twenty-seven million, two thousand, five hundred three".