68520487102 has 16 divisors (see below), whose sum is σ = 104116708800. Its totient is φ = 33815208960.

The previous prime is 68520487097. The next prime is 68520487121. The reversal of 68520487102 is 20178402586.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409174 + ... + 551782.

It is an arithmetic number, because the mean of its divisors is an integer number (6507294300).

Almost surely, 2^68520487102 is an apocalyptic number.

68520487102 is a deficient number, since it is larger than the sum of its proper divisors (35596221698).

68520487102 is a wasteful number, since it uses less digits than its factorization.

68520487102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145731.

The product of its (nonzero) digits is 215040, while the sum is 43.

Adding to 68520487102 its reverse (20178402586), we get a palindrome (88698889688).

The spelling of 68520487102 in words is "sixty-eight billion, five hundred twenty million, four hundred eighty-seven thousand, one hundred two".