66550244310 has 96 divisors (see below), whose sum is σ = 190629897120. Its totient is φ = 15973632000.

The previous prime is 66550244291. The next prime is 66550244317. The reversal of 66550244310 is 1344205566.

66550244310 is a `hidden beast` number, since 66 + 550 + 2 + 4 + 43 + 1 + 0 = 666.

It is a super-2 number, since 2×66550244310² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66550244317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232795 + ... + 432774.

It is an arithmetic number, because the mean of its divisors is an integer number (1985728095).

Almost surely, 2^66550244310 is an apocalyptic number.

66550244310 is an abundant number, since it is smaller than the sum of its proper divisors (124079652810).

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

66550244310 is a wasteful number, since it uses less digits than its factorization.

66550244310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665694 (or 665691 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 66550244310 its reverse (1344205566), we get a palindrome (67894449876).

The spelling of 66550244310 in words is "sixty-six billion, five hundred fifty million, two hundred forty-four thousand, three hundred ten".