672533226450 has 162 divisors, whose sum is σ = 1837427801391. Its totient is φ = 176359265280.

The previous prime is 672533226433. The next prime is 672533226451. The reversal of 672533226450 is 54622335276.

672533226450 is a `hidden beast` number, since 6 + 7 + 2 + 5 + 332 + 264 + 50 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 639003588129 + 33529638321 = 799377^2 + 183111^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=579885.

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 = 672533226396 and 672533226405.

It is not an unprimeable number, because it can be changed into a prime (672533226451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1165568562 + ... + 1165569138.

Almost surely, 2^672533226450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672533226450

672533226450 is an abundant number, since it is smaller than the sum of its proper divisors (1164894574941).

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

672533226450 is an equidigital number, since it uses as much as digits as its factorization.

672533226450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 672533226450 in words is "six hundred seventy-two billion, five hundred thirty-three million, two hundred twenty-six thousand, four hundred fifty".