223743921057 has 16 divisors (see below), whose sum is σ = 350970857280. Its totient is φ = 140388342336.

The previous prime is 223743921031. The next prime is 223743921061. The reversal of 223743921057 is 750129347322.

It is not a de Polignac number, because 223743921057 - 2⁶ = 223743920993 is a prime.

It is a super-2 number, since 2×223743921057² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223743921077) 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, 243729303 + ... + 243730220.

It is an arithmetic number, because the mean of its divisors is an integer number (21935678580).

Almost surely, 2^223743921057 is an apocalyptic number.

223743921057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

223743921057 is a deficient number, since it is larger than the sum of its proper divisors (127226936223).

223743921057 is a wasteful number, since it uses less digits than its factorization.

223743921057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487459549 (or 487459543 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 223743921057 in words is "two hundred twenty-three billion, seven hundred forty-three million, nine hundred twenty-one thousand, fifty-seven".