66653065960 has 96 divisors (see below), whose sum is σ = 164817793440. Its totient is φ = 24242879232.

The previous prime is 66653065951. The next prime is 66653065991. The reversal of 66653065960 is 6956035666.

It is a happy number.

It is a super-2 number, since 2×66653065960² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 66653065898 and 66653065907.

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 23 ways as a sum of consecutive naturals, for example, 379339 + ... + 526501.

It is an arithmetic number, because the mean of its divisors is an integer number (1716852015).

Almost surely, 2^66653065960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66653065960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82408896720).

66653065960 is an abundant number, since it is smaller than the sum of its proper divisors (98164727480).

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

66653065960 is a wasteful number, since it uses less digits than its factorization.

66653065960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147267 (or 147250 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 52.

The spelling of 66653065960 in words is "sixty-six billion, six hundred fifty-three million, sixty-five thousand, nine hundred sixty".