223861455840 has 192 divisors, whose sum is σ = 769708541952. Its totient is φ = 54238464000.

The previous prime is 223861455823. The next prime is 223861455859. The reversal of 223861455840 is 48554168322.

It is a super-3 number, since 3×223861455840³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 223861455840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10026129 + ... + 10048431.

It is an arithmetic number, because the mean of its divisors is an integer number (4008898656).

Almost surely, 2^223861455840 is an apocalyptic number.

223861455840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223861455840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384854270976).

223861455840 is an abundant number, since it is smaller than the sum of its proper divisors (545847086112).

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

223861455840 is a wasteful number, since it uses less digits than its factorization.

223861455840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24233 (or 24225 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 223861455840 in words is "two hundred twenty-three billion, eight hundred sixty-one million, four hundred fifty-five thousand, eight hundred forty".