2105646051 has 16 divisors (see below), whose sum is σ = 2851232384. Its totient is φ = 1381938624.

The previous prime is 2105646047. The next prime is 2105646071. The reversal of 2105646051 is 1506465012.

It is not a de Polignac number, because 2105646051 - 2² = 2105646047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105646041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524016 + ... + 528018.

It is an arithmetic number, because the mean of its divisors is an integer number (178202024).

Almost surely, 2^2105646051 is an apocalyptic number.

2105646051 is a deficient number, since it is larger than the sum of its proper divisors (745586333).

2105646051 is a wasteful number, since it uses less digits than its factorization.

2105646051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6690.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2105646051 is about 45887.3190652930. The cubic root of 2105646051 is about 1281.7257912141.

The spelling of 2105646051 in words is "two billion, one hundred five million, six hundred forty-six thousand, fifty-one".