66560472000 has 672 divisors, whose sum is σ = 268220878848. Its totient is φ = 15609600000.

The previous prime is 66560471993. The next prime is 66560472023. The reversal of 66560472000 is 27406566.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24550645 + ... + 24553355.

Almost surely, 2^66560472000 is an apocalyptic number.

66560472000 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 66560472000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134110439424).

66560472000 is an abundant number, since it is smaller than the sum of its proper divisors (201660406848).

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

66560472000 is a wasteful number, since it uses less digits than its factorization.

66560472000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 66560472000 its reverse (27406566), we get a palindrome (66587878566).

The spelling of 66560472000 in words is "sixty-six billion, five hundred sixty million, four hundred seventy-two thousand".