2600081641 has 4 divisors (see below), whose sum is σ = 2610440784. Its totient is φ = 2589722500.

The previous prime is 2600081599. The next prime is 2600081647. The reversal of 2600081641 is 1461800062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2600081641 - 2⁷ = 2600081513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2600081647) 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 3 ways as a sum of consecutive naturals, for example, 5179195 + ... + 5179696.

It is an arithmetic number, because the mean of its divisors is an integer number (652610196).

Almost surely, 2^2600081641 is an apocalyptic number.

It is an amenable number.

2600081641 is a deficient number, since it is larger than the sum of its proper divisors (10359143).

2600081641 is a wasteful number, since it uses less digits than its factorization.

2600081641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10359142.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2600081641 is about 50990.9956855129. The cubic root of 2600081641 is about 1375.0832594873.

The spelling of 2600081641 in words is "two billion, six hundred million, eighty-one thousand, six hundred forty-one".