873220770450 has 810 divisors, whose sum is σ = 2928915303327. Its totient is φ = 186494313600.

The previous prime is 873220770437. The next prime is 873220770451. The reversal of 873220770450 is 54077022378.

873220770450 is a `hidden beast` number, since 87 + 32 + 20 + 7 + 70 + 450 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 334938830121 + 538281940329 = 578739^2 + 733677^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=660765.

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 = 873220770396 and 873220770405.

It is not an unprimeable number, because it can be changed into a prime (873220770451) by changing a digit.

It is a polite number, since it can be written in 404 ways as a sum of consecutive naturals, for example, 28168411935 + ... + 28168411965.

Almost surely, 2^873220770450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873220770450

873220770450 is an abundant number, since it is smaller than the sum of its proper divisors (2055694532877).

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

873220770450 is a wasteful number, since it uses less digits than its factorization.

873220770450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The spelling of 873220770450 in words is "eight hundred seventy-three billion, two hundred twenty million, seven hundred seventy thousand, four hundred fifty".