223515545400 has 576 divisors, whose sum is σ = 893553523200. Its totient is φ = 48988800000.

The previous prime is 223515545353. The next prime is 223515545411. The reversal of 223515545400 is 4545515322.

223515545400 is a `hidden beast` number, since 2 + 2 + 3 + 51 + 554 + 54 + 0 + 0 = 666.

It is a super-2 number, since 2×223515545400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 55173375 + ... + 55177425.

It is an arithmetic number, because the mean of its divisors is an integer number (1551308200).

Almost surely, 2^223515545400 is an apocalyptic number.

223515545400 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 223515545400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446776761600).

223515545400 is an abundant number, since it is smaller than the sum of its proper divisors (670037977800).

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

223515545400 is a wasteful number, since it uses less digits than its factorization.

223515545400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260 (or 4248 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 223515545400 in words is "two hundred twenty-three billion, five hundred fifteen million, five hundred forty-five thousand, four hundred".