2106406231563 has 8 divisors (see below), whose sum is σ = 2809389389008. Its totient is φ = 1403846947584.

The previous prime is 2106406231499. The next prime is 2106406231577. The reversal of 2106406231563 is 3651326046012.

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

It is not a de Polignac number, because 2106406231563 - 2⁶ = 2106406231499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106406231583) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 105956770 + ... + 105976647.

It is an arithmetic number, because the mean of its divisors is an integer number (351173673626).

Almost surely, 2^{2106406231563} is an apocalyptic number.

2106406231563 is a deficient number, since it is larger than the sum of its proper divisors (702983157445).

2106406231563 is a wasteful number, since it uses less digits than its factorization.

2106406231563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211936733.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 2106406231563 in words is "two trillion, one hundred six billion, four hundred six million, two hundred thirty-one thousand, five hundred sixty-three".