66255305504 has 48 divisors (see below), whose sum is σ = 138165766200. Its totient is φ = 31167074304.

The previous prime is 66255305491. The next prime is 66255305509. The reversal of 66255305504 is 40550355266.

It can be written as a sum of positive squares in 4 ways, for example, as 63191904400 + 3063401104 = 251380^2 + 55348^2 .

It is not an unprimeable number, because it can be changed into a prime (66255305509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495382 + ... + 1539050.

Almost surely, 2^66255305504 is an apocalyptic number.

It is an amenable number.

66255305504 is an abundant number, since it is smaller than the sum of its proper divisors (71910460696).

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

66255305504 is a wasteful number, since it uses less digits than its factorization.

66255305504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46485 (or 46477 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 66255305504 in words is "sixty-six billion, two hundred fifty-five million, three hundred five thousand, five hundred four".