66499488000 has 576 divisors, whose sum is σ = 267769232640. Its totient is φ = 16118784000.

The previous prime is 66499487987. The next prime is 66499488017. The reversal of 66499488000 is 88499466.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 63 ways as a sum of consecutive naturals, for example, 9500502 + ... + 9507498.

It is an arithmetic number, because the mean of its divisors is an integer number (464877140).

Almost surely, 2^66499488000 is an apocalyptic number.

66499488000 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 66499488000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133884616320).

66499488000 is an abundant number, since it is smaller than the sum of its proper divisors (201269744640).

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

66499488000 is a wasteful number, since it uses less digits than its factorization.

66499488000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048 (or 7018 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 66499488000 in words is "sixty-six billion, four hundred ninety-nine million, four hundred eighty-eight thousand".