66488083200000 has 4608 divisors, whose sum is σ = 324303243264000. Its totient is φ = 13038796800000.

The previous prime is 66488083199969. The next prime is 66488083200017. The reversal of 66488083200000 is 238088466.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (4608).

It is a super-2 number, since 2×66488083200000² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 252806399869 + ... + 252806400131.

It is an arithmetic number, because the mean of its divisors is an integer number (70378308000).

Almost surely, 2^{66488083200000} is an apocalyptic number.

66488083200000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66488083200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162151621632000).

66488083200000 is an abundant number, since it is smaller than the sum of its proper divisors (257815160064000).

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

66488083200000 is a wasteful number, since it uses less digits than its factorization.

66488083200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 66488083200000 in words is "sixty-six trillion, four hundred eighty-eight billion, eighty-three million, two hundred thousand".