66007872000 has 1600 divisors, whose sum is σ = 300311421696. Its totient is φ = 14067302400.

The previous prime is 66007871999. The next prime is 66007872001. The reversal of 66007872000 is 27870066.

It is an interprime number because it is at equal distance from previous prime (66007871999) and next prime (66007872001).

It is a tau number, because it is divible by the number of its divisors (1600).

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

It is not an unprimeable number, because it can be changed into a prime (66007872001) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 616895947 + ... + 616896053.

Almost surely, 2^66007872000 is an apocalyptic number.

66007872000 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 66007872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150155710848).

66007872000 is an abundant number, since it is smaller than the sum of its proper divisors (234303549696).

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

66007872000 is a wasteful number, since it uses less digits than its factorization.

66007872000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 66007872000 in words is "sixty-six billion, seven million, eight hundred seventy-two thousand".