66059918496 has 768 divisors, whose sum is σ = 237758976000. Its totient is φ = 17569198080.

The previous prime is 66059918473. The next prime is 66059918501. The reversal of 66059918496 is 69481995066.

66059918496 is a `hidden beast` number, since 6 + 6 + 0 + 59 + 91 + 8 + 496 = 666.

66059918496 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 369049735 + ... + 369049913.

It is an arithmetic number, because the mean of its divisors is an integer number (309582000).

Almost surely, 2^66059918496 is an apocalyptic number.

66059918496 is a gapful number since it is divisible by the number (66) 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 66059918496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118879488000).

66059918496 is an abundant number, since it is smaller than the sum of its proper divisors (171699057504).

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

66059918496 is a wasteful number, since it uses less digits than its factorization.

66059918496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The spelling of 66059918496 in words is "sixty-six billion, fifty-nine million, nine hundred eighteen thousand, four hundred ninety-six".