66030311201600 has 84 divisors (see below), whose sum is σ = 162479452095564. Its totient is φ = 26411536404480.

The previous prime is 66030311201593. The next prime is 66030311201669. The reversal of 66030311201600 is 610211303066.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18756105812224 + 47274205389376 = 4330832^2 + 6875624^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75329042 + ... + 76200558.

Almost surely, 2^{66030311201600} is an apocalyptic number.

It is an amenable number.

66030311201600 is an abundant number, since it is smaller than the sum of its proper divisors (96449140893964).

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

66030311201600 is a wasteful number, since it uses less digits than its factorization.

66030311201600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918892 (or 918877 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 66030311201600 its reverse (610211303066), we get a palindrome (66640522504666).

The spelling of 66030311201600 in words is "sixty-six trillion, thirty billion, three hundred eleven million, two hundred one thousand, six hundred".