68066311502 has 24 divisors (see below), whose sum is σ = 119148274656. Its totient is φ = 29078064288.

The previous prime is 68066311463. The next prime is 68066311519. The reversal of 68066311502 is 20511366086.

It is a super-2 number, since 2×68066311502² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1078838 + ... + 1140185.

It is an arithmetic number, because the mean of its divisors is an integer number (4964511444).

Almost surely, 2^68066311502 is an apocalyptic number.

68066311502 is a deficient number, since it is larger than the sum of its proper divisors (51081963154).

68066311502 is a wasteful number, since it uses less digits than its factorization.

68066311502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219352 (or 2219345 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 68066311502 its reverse (20511366086), we get a palindrome (88577677588).

The spelling of 68066311502 in words is "sixty-eight billion, sixty-six million, three hundred eleven thousand, five hundred two".