2581122471779 has 2 divisors, whose sum is σ = 2581122471780. Its totient is φ = 2581122471778.

The previous prime is 2581122471773. The next prime is 2581122471787. The reversal of 2581122471779 is 9771742211852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2581122471779 - 2³⁶ = 2512402995043 is a prime.

It is not a weakly prime, because it can be changed into another prime (2581122471773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290561235889 + 1290561235890.

It is an arithmetic number, because the mean of its divisors is an integer number (1290561235890).

Almost surely, 2^{2581122471779} is an apocalyptic number.

2581122471779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581122471779 is an equidigital number, since it uses as much as digits as its factorization.

2581122471779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 56.

The spelling of 2581122471779 in words is "two trillion, five hundred eighty-one billion, one hundred twenty-two million, four hundred seventy-one thousand, seven hundred seventy-nine".