8216225603550 has 36 divisors (see below), whose sum is σ = 22074259456080. Its totient is φ = 2190993494160.

The previous prime is 8216225603533. The next prime is 8216225603629. The reversal of 8216225603550 is 553065226128.

8216225603550 is a `hidden beast` number, since 8 + 2 + 1 + 6 + 2 + 2 + 560 + 35 + 50 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 8216225603496 and 8216225603505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9129139110 + ... + 9129140009.

It is an arithmetic number, because the mean of its divisors is an integer number (613173873780).

Almost surely, 2^{8216225603550} is an apocalyptic number.

8216225603550 is an abundant number, since it is smaller than the sum of its proper divisors (13858033852530).

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

8216225603550 is a wasteful number, since it uses less digits than its factorization.

8216225603550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18258279137 (or 18258279129 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 8216225603550 in words is "eight trillion, two hundred sixteen billion, two hundred twenty-five million, six hundred three thousand, five hundred fifty".