66926945560 has 64 divisors (see below), whose sum is σ = 151210936800. Its totient is φ = 26659777536.

The previous prime is 66926945557. The next prime is 66926945597. The reversal of 66926945560 is 6554962966.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66926945495 and 66926945504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21525286 + ... + 21528394.

Almost surely, 2^66926945560 is an apocalyptic number.

It is an amenable number.

66926945560 is an abundant number, since it is smaller than the sum of its proper divisors (84283991240).

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

66926945560 is a wasteful number, since it uses less digits than its factorization.

66926945560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180 (or 5176 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 58.

The spelling of 66926945560 in words is "sixty-six billion, nine hundred twenty-six million, nine hundred forty-five thousand, five hundred sixty".