68866775548 has 12 divisors (see below), whose sum is σ = 123774069832. Its totient is φ = 33502755600.

The previous prime is 68866775539. The next prime is 68866775567. The reversal of 68866775548 is 84557766886.

It is a happy number.

It is a super-2 number, since 2×68866775548² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232657878 + ... + 232658173.

Almost surely, 2^68866775548 is an apocalyptic number.

It is an amenable number.

68866775548 is a deficient number, since it is larger than the sum of its proper divisors (54907294284).

68866775548 is a wasteful number, since it uses less digits than its factorization.

68866775548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465316092 (or 465316090 counting only the distinct ones).

The product of its digits is 541900800, while the sum is 70.

The spelling of 68866775548 in words is "sixty-eight billion, eight hundred sixty-six million, seven hundred seventy-five thousand, five hundred forty-eight".