68272725767666 has 24 divisors (see below), whose sum is σ = 119130202982700. Its totient is φ = 29259429374112.

The previous prime is 68272725767611. The next prime is 68272725767671. The reversal of 68272725767666 is 66676752727286.

It can be written as a sum of positive squares in 2 ways, for example, as 66479480715025 + 1793245052641 = 8153495^2 + 1339121^2 .

It is a super-2 number, since 2×68272725767666² (a number of 28 digits) contains 22 as substring.

It is a Curzon 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, 5718236 + ... + 13009368.

Almost surely, 2^{68272725767666} is an apocalyptic number.

68272725767666 is a deficient number, since it is larger than the sum of its proper divisors (50857477215034).

68272725767666 is a wasteful number, since it uses less digits than its factorization.

68272725767666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7386698 (or 7386691 counting only the distinct ones).

The product of its digits is 5974456320, while the sum is 77.

The spelling of 68272725767666 in words is "sixty-eight trillion, two hundred seventy-two billion, seven hundred twenty-five million, seven hundred sixty-seven thousand, six hundred sixty-six".