16223365620 has 144 divisors (see below), whose sum is σ = 61353871488. Its totient is φ = 3371086080.

The previous prime is 16223365619. The next prime is 16223365633. The reversal of 16223365620 is 2656332261.

16223365620 is a `hidden beast` number, since 1 + 6 + 2 + 23 + 3 + 6 + 5 + 620 = 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, 571399 + ... + 599118.

It is an arithmetic number, because the mean of its divisors is an integer number (426068552).

Almost surely, 2^16223365620 is an apocalyptic number.

16223365620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16223365620 is an abundant number, since it is smaller than the sum of its proper divisors (45130505868).

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

16223365620 is a wasteful number, since it uses less digits than its factorization.

16223365620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170550 (or 1170545 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 16223365620 its reverse (2656332261), we get a palindrome (18879697881).

The spelling of 16223365620 in words is "sixteen billion, two hundred twenty-three million, three hundred sixty-five thousand, six hundred twenty".