66620128096 has 12 divisors (see below), whose sum is σ = 131158377252. Its totient is φ = 33310064032.

The previous prime is 66620128049. The next prime is 66620128103. The reversal of 66620128096 is 69082102666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040939470 + ... + 1040939533.

It is an arithmetic number, because the mean of its divisors is an integer number (10929864771).

Almost surely, 2^66620128096 is an apocalyptic number.

It is an amenable number.

66620128096 is a deficient number, since it is larger than the sum of its proper divisors (64538249156).

66620128096 is a wasteful number, since it uses less digits than its factorization.

66620128096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081879013 (or 2081879005 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 66620128096 in words is "sixty-six billion, six hundred twenty million, one hundred twenty-eight thousand, ninety-six".