223643425500 has 144 divisors (see below), whose sum is σ = 769658853600. Its totient is φ = 54216576000.

The previous prime is 223643425493. The next prime is 223643425541. The reversal of 223643425500 is 5524346322.

223643425500 is a `hidden beast` number, since 2 + 2 + 3 + 64 + 3 + 42 + 550 + 0 = 666.

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 47 ways as a sum of consecutive naturals, for example, 2209525 + ... + 2308524.

It is an arithmetic number, because the mean of its divisors is an integer number (5344853150).

Almost surely, 2^223643425500 is an apocalyptic number.

223643425500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223643425500 is an abundant number, since it is smaller than the sum of its proper divisors (546015428100).

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

223643425500 is a wasteful number, since it uses less digits than its factorization.

223643425500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518085 (or 4518070 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 223643425500 in words is "two hundred twenty-three billion, six hundred forty-three million, four hundred twenty-five thousand, five hundred".