66765754460 has 12 divisors (see below), whose sum is σ = 140208084408. Its totient is φ = 26706301776.

The previous prime is 66765754441. The next prime is 66765754481. The reversal of 66765754460 is 6445756766.

It is a super-2 number, since 2×66765754460² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66765754396 and 66765754405.

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, 1669143842 + ... + 1669143881.

It is an arithmetic number, because the mean of its divisors is an integer number (11684007034).

Almost surely, 2^66765754460 is an apocalyptic number.

It is an amenable number.

66765754460 is an abundant number, since it is smaller than the sum of its proper divisors (73442329948).

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

66765754460 is a wasteful number, since it uses less digits than its factorization.

66765754460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338287732 (or 3338287730 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 56.

The spelling of 66765754460 in words is "sixty-six billion, seven hundred sixty-five million, seven hundred fifty-four thousand, four hundred sixty".