223621775720 has 32 divisors (see below), whose sum is σ = 575027424000. Its totient is φ = 76670323008.

The previous prime is 223621775693. The next prime is 223621775747. The reversal of 223621775720 is 27577126322.

It is an interprime number because it is at equal distance from previous prime (223621775693) and next prime (223621775747).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399324320 + ... + 399324879.

It is an arithmetic number, because the mean of its divisors is an integer number (17969607000).

Almost surely, 2^223621775720 is an apocalyptic number.

223621775720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223621775720 is an abundant number, since it is smaller than the sum of its proper divisors (351405648280).

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

223621775720 is a wasteful number, since it uses less digits than its factorization.

223621775720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798649217 (or 798649213 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 223621775720 in words is "two hundred twenty-three billion, six hundred twenty-one million, seven hundred seventy-five thousand, seven hundred twenty".