66727333320 has 32 divisors (see below), whose sum is σ = 200182000320. Its totient is φ = 17793955520.

The previous prime is 66727333319. The next prime is 66727333333. The reversal of 66727333320 is 2333372766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278030436 + ... + 278030675.

It is an arithmetic number, because the mean of its divisors is an integer number (6255687510).

Almost surely, 2^66727333320 is an apocalyptic number.

66727333320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66727333320 is an abundant number, since it is smaller than the sum of its proper divisors (133454667000).

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

66727333320 is a wasteful number, since it uses less digits than its factorization.

66727333320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556061125 (or 556061121 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 42.

The spelling of 66727333320 in words is "sixty-six billion, seven hundred twenty-seven million, three hundred thirty-three thousand, three hundred twenty".