223565057640 has 160 divisors (see below), whose sum is σ = 755928391680. Its totient is φ = 59260215168.

The previous prime is 223565057633. The next prime is 223565057657. The reversal of 223565057640 is 46750565322.

223565057640 is a `hidden beast` number, since 2 + 2 + 35 + 6 + 5 + 0 + 576 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 334489 + ... + 747671.

It is an arithmetic number, because the mean of its divisors is an integer number (4724552448).

Almost surely, 2^223565057640 is an apocalyptic number.

223565057640 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 223565057640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377964195840).

223565057640 is an abundant number, since it is smaller than the sum of its proper divisors (532363334040).

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

223565057640 is a wasteful number, since it uses less digits than its factorization.

223565057640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413373 (or 413360 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 223565057640 in words is "two hundred twenty-three billion, five hundred sixty-five million, fifty-seven thousand, six hundred forty".