68520487103 has 4 divisors (see below), whose sum is σ = 68532643920. Its totient is φ = 68508330288.

The previous prime is 68520487097. The next prime is 68520487121. The reversal of 68520487103 is 30178402586.

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 68520487103 - 2³⁰ = 67446745279 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 (68520487153) 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, 6069950 + ... + 6081227.

It is an arithmetic number, because the mean of its divisors is an integer number (17133160980).

Almost surely, 2^68520487103 is an apocalyptic number.

68520487103 is a deficient number, since it is larger than the sum of its proper divisors (12156817).

68520487103 is a wasteful number, since it uses less digits than its factorization.

68520487103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12156816.

The product of its (nonzero) digits is 322560, while the sum is 44.

Adding to 68520487103 its reverse (30178402586), we get a palindrome (98698889689).

The spelling of 68520487103 in words is "sixty-eight billion, five hundred twenty million, four hundred eighty-seven thousand, one hundred three".