66101676480 has 336 divisors, whose sum is σ = 269468559360. Its totient is φ = 15108830208.

The previous prime is 66101676467. The next prime is 66101676481. The reversal of 66101676480 is 8467610166.

66101676480 is a `hidden beast` number, since 6 + 6 + 1 + 0 + 167 + 6 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66101676481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 483601 + ... + 605039.

It is an arithmetic number, because the mean of its divisors is an integer number (801989760).

Almost surely, 2^66101676480 is an apocalyptic number.

66101676480 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 66101676480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134734279680).

66101676480 is an abundant number, since it is smaller than the sum of its proper divisors (203366882880).

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

66101676480 is a wasteful number, since it uses less digits than its factorization.

66101676480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121478 (or 121456 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 66101676480 in words is "sixty-six billion, one hundred one million, six hundred seventy-six thousand, four hundred eighty".