223657161046566 has 16 divisors (see below), whose sum is σ = 481723116100464. Its totient is φ = 68817588014304.

The previous prime is 223657161046559. The next prime is 223657161046589. The reversal of 223657161046566 is 665640161756322.

It is a congruent number.

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, 1433699750221 + ... + 1433699750376.

It is an arithmetic number, because the mean of its divisors is an integer number (30107694756279).

Almost surely, 2^{223657161046566} is an apocalyptic number.

223657161046566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

223657161046566 is an abundant number, since it is smaller than the sum of its proper divisors (258065955053898).

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

223657161046566 is a wasteful number, since it uses less digits than its factorization.

223657161046566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867399500615.

The product of its (nonzero) digits is 65318400, while the sum is 60.

The spelling of 223657161046566 in words is "two hundred twenty-three trillion, six hundred fifty-seven billion, one hundred sixty-one million, forty-six thousand, five hundred sixty-six".