66413310550 has 48 divisors (see below), whose sum is σ = 124218545040. Its totient is φ = 26417266560.

The previous prime is 66413310541. The next prime is 66413310641. The reversal of 66413310550 is 5501331466.

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, 11313016 + ... + 11318884.

It is an arithmetic number, because the mean of its divisors is an integer number (2587886355).

Almost surely, 2^66413310550 is an apocalyptic number.

66413310550 is a deficient number, since it is larger than the sum of its proper divisors (57805234490).

66413310550 is a wasteful number, since it uses less digits than its factorization.

66413310550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7105 (or 7100 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 66413310550 in words is "sixty-six billion, four hundred thirteen million, three hundred ten thousand, five hundred fifty".