221646257673060 has 48 divisors (see below), whose sum is σ = 677028568894272. Its totient is φ = 53732426102400.

The previous prime is 221646257672977. The next prime is 221646257673077. The reversal of 221646257673060 is 60376752646122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167913830911 + ... + 167913832230.

It is an arithmetic number, because the mean of its divisors is an integer number (14104761851964).

Almost surely, 2^{221646257673060} is an apocalyptic number.

221646257673060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221646257673060 is an abundant number, since it is smaller than the sum of its proper divisors (455382311221212).

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

221646257673060 is a wasteful number, since it uses less digits than its factorization.

221646257673060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335827663164 (or 335827663162 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 57.

The spelling of 221646257673060 in words is "two hundred twenty-one trillion, six hundred forty-six billion, two hundred fifty-seven million, six hundred seventy-three thousand, sixty".