786220380450 has 90 divisors (see below), whose sum is σ = 2184684686019. Its totient is φ = 209643720480.

The previous prime is 786220380403. The next prime is 786220380493. The reversal of 786220380450 is 54083022687.

786220380450 is a `hidden beast` number, since 7 + 8 + 6 + 220 + 380 + 45 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 757375094529 + 28845285921 = 870273^2 + 169839^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=626985.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 786220380396 and 786220380405.

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 56421684 + ... + 56435616.

Almost surely, 2^786220380450 is an apocalyptic number.

786220380450 is an abundant number, since it is smaller than the sum of its proper divisors (1398464305569).

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

786220380450 is an frugal number, since it uses more digits than its factorization.

786220380450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27890 (or 13943 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 786220380450 in words is "seven hundred eighty-six billion, two hundred twenty million, three hundred eighty thousand, four hundred fifty".