2105135501 has 6 divisors (see below), whose sum is σ = 2448831150. Its totient is φ = 1804401816.

The previous prime is 2105135497. The next prime is 2105135509. The reversal of 2105135501 is 1055315012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2054355625 + 50779876 = 45325^2 + 7126^2 .

It is not a de Polignac number, because 2105135501 - 2² = 2105135497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105135509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21480926 + ... + 21481023.

It is an arithmetic number, because the mean of its divisors is an integer number (408138525).

Almost surely, 2^2105135501 is an apocalyptic number.

It is an amenable number.

2105135501 is a deficient number, since it is larger than the sum of its proper divisors (343695649).

2105135501 is an equidigital number, since it uses as much as digits as its factorization.

2105135501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42961963 (or 42961956 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 2105135501 is about 45881.7556442645. The cubic root of 2105135501 is about 1281.6221907066.

The spelling of 2105135501 in words is "two billion, one hundred five million, one hundred thirty-five thousand, five hundred one".