630822816450 has 54 divisors (see below), whose sum is σ = 1694855900907. Its totient is φ = 168214924800.

The previous prime is 630822816431. The next prime is 630822816509. The reversal of 630822816450 is 54618228036.

630822816450 is a `hidden beast` number, since 6 + 308 + 2 + 281 + 64 + 5 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 247863583881 + 382959232569 = 497859^2 + 618837^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=561615.

It is a super-3 number, since 3×630822816450³ (a number of 36 digits) contains 333 as substring.

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 = 630822816396 and 630822816405.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16829730 + ... + 16867170.

Almost surely, 2^630822816450 is an apocalyptic number.

630822816450 is an abundant number, since it is smaller than the sum of its proper divisors (1064033084457).

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

630822816450 is an frugal number, since it uses more digits than its factorization.

630822816450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74900 (or 37451 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 630822816450 in words is "six hundred thirty billion, eight hundred twenty-two million, eight hundred sixteen thousand, four hundred fifty".