2580464681 has 2 divisors, whose sum is σ = 2580464682. Its totient is φ = 2580464680.

The previous prime is 2580464669. The next prime is 2580464699. The reversal of 2580464681 is 1864640852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2373248656 + 207216025 = 48716^2 + 14395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2580464681 - 2⁶ = 2580464617 is a prime.

It is a super-2 number, since 2×2580464681² = 13317595939776863522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2580464581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290232340 + 1290232341.

It is an arithmetic number, because the mean of its divisors is an integer number (1290232341).

Almost surely, 2^2580464681 is an apocalyptic number.

It is an amenable number.

2580464681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2580464681 is an equidigital number, since it uses as much as digits as its factorization.

2580464681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 2580464681 is about 50798.2743899830. The cubic root of 2580464681 is about 1371.6163069628.

The spelling of 2580464681 in words is "two billion, five hundred eighty million, four hundred sixty-four thousand, six hundred eighty-one".