2613268021 has 16 divisors (see below), whose sum is σ = 3223269504. Its totient is φ = 2063179584.

The previous prime is 2613268003. The next prime is 2613268051. The reversal of 2613268021 is 1208623162.

It is a cyclic number.

It is not a de Polignac number, because 2613268021 - 2²⁹ = 2076397109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2613268051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11751 + ... + 73243.

It is an arithmetic number, because the mean of its divisors is an integer number (201454344).

Almost surely, 2^2613268021 is an apocalyptic number.

It is an amenable number.

2613268021 is a deficient number, since it is larger than the sum of its proper divisors (610001483).

2613268021 is a wasteful number, since it uses less digits than its factorization.

2613268021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61980.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2613268021 is about 51120.1332255697. The cubic root of 2613268021 is about 1377.4039306609.

The spelling of 2613268021 in words is "two billion, six hundred thirteen million, two hundred sixty-eight thousand, twenty-one".