66128607350 has 48 divisors (see below), whose sum is σ = 132487541088. Its totient is φ = 24411767040.

The previous prime is 66128607331. The next prime is 66128607401. The reversal of 66128607350 is 5370682166.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5302322 + ... + 5314778.

It is an arithmetic number, because the mean of its divisors is an integer number (2760157106).

Almost surely, 2^66128607350 is an apocalyptic number.

66128607350 is an abundant number, since it is smaller than the sum of its proper divisors (66358933738).

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

66128607350 is a wasteful number, since it uses less digits than its factorization.

66128607350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20649 (or 20644 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 66128607350 in words is "sixty-six billion, one hundred twenty-eight million, six hundred seven thousand, three hundred fifty".