220361768500 has 24 divisors (see below), whose sum is σ = 481270103496. Its totient is φ = 88144707200.

The previous prime is 220361768491. The next prime is 220361768527. The reversal of 220361768500 is 5867163022.

It can be written as a sum of positive squares in 4 ways, for example, as 8785687824 + 211576080676 = 93732^2 + 459974^2 .

It is a congruent number.

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, 220361269 + ... + 220362268.

It is an arithmetic number, because the mean of its divisors is an integer number (20052920979).

Almost surely, 2^220361768500 is an apocalyptic number.

220361768500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220361768500 is an abundant number, since it is smaller than the sum of its proper divisors (260908334996).

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

220361768500 is a wasteful number, since it uses less digits than its factorization.

220361768500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440723556 (or 440723544 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 220361768500 in words is "two hundred twenty billion, three hundred sixty-one million, seven hundred sixty-eight thousand, five hundred".