2106439700450 has 18 divisors (see below), whose sum is σ = 3917996931459. Its totient is φ = 842571775120.

The previous prime is 2106439700383. The next prime is 2106439700473. The reversal of 2106439700450 is 540079346012.

It can be written as a sum of positive squares in 5 ways, for example, as 186194839009 + 1920244861441 = 431503^2 + 1385729^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1026265.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2106439700398 and 2106439700407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10160024 + ... + 10365276.

Almost surely, 2^{2106439700450} is an apocalyptic number.

2106439700450 is a deficient number, since it is larger than the sum of its proper divisors (1811557231009).

2106439700450 is an frugal number, since it uses more digits than its factorization.

2106439700450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410518 (or 205260 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 2106439700450 in words is "two trillion, one hundred six billion, four hundred thirty-nine million, seven hundred thousand, four hundred fifty".