2653671021 has 16 divisors (see below), whose sum is σ = 3653959680. Its totient is φ = 1711298160.

The previous prime is 2653671011. The next prime is 2653671029. The reversal of 2653671021 is 1201763562.

It is not a de Polignac number, because 2653671021 - 2⁷ = 2653670893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653671029) 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 15 ways as a sum of consecutive naturals, for example, 276420 + ... + 285858.

It is an arithmetic number, because the mean of its divisors is an integer number (228372480).

Almost surely, 2^2653671021 is an apocalyptic number.

It is an amenable number.

2653671021 is a deficient number, since it is larger than the sum of its proper divisors (1000288659).

2653671021 is a wasteful number, since it uses less digits than its factorization.

2653671021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12496.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2653671021 is about 51513.7944729371. The cubic root of 2653671021 is about 1384.4662100398.

The spelling of 2653671021 in words is "two billion, six hundred fifty-three million, six hundred seventy-one thousand, twenty-one".