68966206938 has 12 divisors (see below), whose sum is σ = 149426781738. Its totient is φ = 22988735640.

The previous prime is 68966206927. The next prime is 68966206949. The reversal of 68966206938 is 83960266986.

It is an interprime number because it is at equal distance from previous prime (68966206927) and next prime (68966206949).

It can be written as a sum of positive squares in only one way, i.e., 58265752689 + 10700454249 = 241383^2 + 103443^2 .

It is a super-3 number, since 3×68966206938³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1915727953 + ... + 1915727988.

Almost surely, 2^68966206938 is an apocalyptic number.

68966206938 is an abundant number, since it is smaller than the sum of its proper divisors (80460574800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68966206938 is a wasteful number, since it uses less digits than its factorization.

68966206938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831455949 (or 3831455946 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 68966206938 in words is "sixty-eight billion, nine hundred sixty-six million, two hundred six thousand, nine hundred thirty-eight".