2106784009546 has 8 divisors (see below), whose sum is σ = 3160874718144. Its totient is φ = 1053159103500.

The previous prime is 2106784009439. The next prime is 2106784009559. The reversal of 2106784009546 is 6459004876012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2106784009546² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2106784009493 and 2106784009502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116439330 + ... + 116457421.

It is an arithmetic number, because the mean of its divisors is an integer number (395109339768).

Almost surely, 2^{2106784009546} is an apocalyptic number.

2106784009546 is a deficient number, since it is larger than the sum of its proper divisors (1054090708598).

2106784009546 is a wasteful number, since it uses less digits than its factorization.

2106784009546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232901276.

The product of its (nonzero) digits is 2903040, while the sum is 52.

It can be divided in two parts, 210678 and 4009546, that added together give a palindrome (4220224).

The spelling of 2106784009546 in words is "two trillion, one hundred six billion, seven hundred eighty-four million, nine thousand, five hundred forty-six".