2175561222450 has 384 divisors, whose sum is σ = 6782505891840. Its totient is φ = 448327526400.

The previous prime is 2175561222449. The next prime is 2175561222493. The reversal of 2175561222450 is 542221655712.

It is a super-3 number, since 3×2175561222450³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1466999409 + ... + 1467000891.

It is an arithmetic number, because the mean of its divisors is an integer number (17662775760).

Almost surely, 2^{2175561222450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2175561222450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3391252945920).

2175561222450 is an abundant number, since it is smaller than the sum of its proper divisors (4606944669390).

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

2175561222450 is a wasteful number, since it uses less digits than its factorization.

2175561222450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 2175561222450 in words is "two trillion, one hundred seventy-five billion, five hundred sixty-one million, two hundred twenty-two thousand, four hundred fifty".