2646244261 has 16 divisors (see below), whose sum is σ = 2743072128. Its totient is φ = 2551348800.

The previous prime is 2646244219. The next prime is 2646244273. The reversal of 2646244261 is 1624426462.

It is a cyclic number.

It is not a de Polignac number, because 2646244261 - 2¹³ = 2646236069 is a prime.

It is a super-2 number, since 2×2646244261² = 14005217377750872242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2646244261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646244061) 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, 2240091 + ... + 2241271.

It is an arithmetic number, because the mean of its divisors is an integer number (171442008).

Almost surely, 2^2646244261 is an apocalyptic number.

It is an amenable number.

2646244261 is a deficient number, since it is larger than the sum of its proper divisors (96827867).

2646244261 is a wasteful number, since it uses less digits than its factorization.

2646244261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932.

The product of its digits is 110592, while the sum is 37.

The square root of 2646244261 is about 51441.6588087904. The cubic root of 2646244261 is about 1383.1734467683.

The spelling of 2646244261 in words is "two billion, six hundred forty-six million, two hundred forty-four thousand, two hundred sixty-one".