2100712665 has 8 divisors (see below), whose sum is σ = 3361140288. Its totient is φ = 1120380080.

The previous prime is 2100712651. The next prime is 2100712667. The reversal of 2100712665 is 5662170012.

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

It is not a de Polignac number, because 2100712665 - 2¹⁵ = 2100679897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100712667) 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, 70023741 + ... + 70023770.

It is an arithmetic number, because the mean of its divisors is an integer number (420142536).

Almost surely, 2^2100712665 is an apocalyptic number.

It is an amenable number.

2100712665 is a deficient number, since it is larger than the sum of its proper divisors (1260427623).

2100712665 is a wasteful number, since it uses less digits than its factorization.

2100712665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140047519.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 2100712665 is about 45833.5321025993. The cubic root of 2100712665 is about 1280.7240095482.

Adding to 2100712665 its reverse (5662170012), we get a palindrome (7762882677).

The spelling of 2100712665 in words is "two billion, one hundred million, seven hundred twelve thousand, six hundred sixty-five".