223642122377550 has 192 divisors, whose sum is σ = 562092274934784. Its totient is φ = 58840962969600.

The previous prime is 223642122377501. The next prime is 223642122377651. The reversal of 223642122377550 is 55773221246322.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 223642122377493 and 223642122377502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5452404642 + ... + 5452445658.

It is an arithmetic number, because the mean of its divisors is an integer number (2927563931952).

Almost surely, 2^{223642122377550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223642122377550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281046137467392).

223642122377550 is an abundant number, since it is smaller than the sum of its proper divisors (338450152557234).

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

223642122377550 is a wasteful number, since it uses less digits than its factorization.

223642122377550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42603 (or 42598 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 51.

The spelling of 223642122377550 in words is "two hundred twenty-three trillion, six hundred forty-two billion, one hundred twenty-two million, three hundred seventy-seven thousand, five hundred fifty".