2520655779 has 16 divisors (see below), whose sum is σ = 3441712032. Its totient is φ = 1640341248.

The previous prime is 2520655771. The next prime is 2520655789. The reversal of 2520655779 is 9775560252.

It is not a de Polignac number, because 2520655779 - 2³ = 2520655771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2520655771) 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, 8914 + ... + 71559.

It is an arithmetic number, because the mean of its divisors is an integer number (215107002).

Almost surely, 2^2520655779 is an apocalyptic number.

2520655779 is a deficient number, since it is larger than the sum of its proper divisors (921056253).

2520655779 is a wasteful number, since it uses less digits than its factorization.

2520655779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80726.

The product of its (nonzero) digits is 1323000, while the sum is 48.

The square root of 2520655779 is about 50206.1328823481. The cubic root of 2520655779 is about 1360.9364547709.

The spelling of 2520655779 in words is "two billion, five hundred twenty million, six hundred fifty-five thousand, seven hundred seventy-nine".