223115605641661 has 16 divisors (see below), whose sum is σ = 235974573642240. Its totient is φ = 210368266985520.

The previous prime is 223115605641647. The next prime is 223115605641667. The reversal of 223115605641661 is 166146506511322.

It is a cyclic number.

It is not a de Polignac number, because 223115605641661 - 2¹¹ = 223115605639613 is a prime.

It is a super-3 number, since 3×223115605641661³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223115605641667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366370926 + ... + 366979408.

It is an arithmetic number, because the mean of its divisors is an integer number (14748410852640).

Almost surely, 2^{223115605641661} is an apocalyptic number.

It is an amenable number.

223115605641661 is a deficient number, since it is larger than the sum of its proper divisors (12858968000579).

223115605641661 is a wasteful number, since it uses less digits than its factorization.

223115605641661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700176.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 223115605641661 in words is "two hundred twenty-three trillion, one hundred fifteen billion, six hundred five million, six hundred forty-one thousand, six hundred sixty-one".