2106246561 has 8 divisors (see below), whose sum is σ = 2808663264. Its totient is φ = 1403997120.

The previous prime is 2106246559. The next prime is 2106246617. The reversal of 2106246561 is 1656426012.

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

It is not a de Polignac number, because 2106246561 - 2¹ = 2106246559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2106246661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8680 + ... + 65481.

It is an arithmetic number, because the mean of its divisors is an integer number (351082908).

Almost surely, 2^2106246561 is an apocalyptic number.

It is an amenable number.

2106246561 is a deficient number, since it is larger than the sum of its proper divisors (702416703).

2106246561 is an equidigital number, since it uses as much as digits as its factorization.

2106246561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83631.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2106246561 is about 45893.8619098459. The cubic root of 2106246561 is about 1281.8476249219.

The spelling of 2106246561 in words is "two billion, one hundred six million, two hundred forty-six thousand, five hundred sixty-one".