2580720078 has 16 divisors (see below), whose sum is σ = 5281474176. Its totient is φ = 840234360.

The previous prime is 2580720073. The next prime is 2580720089. The reversal of 2580720078 is 8700270852.

It is a super-2 number, since 2×2580720078² = 13320232241984652168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580720073) 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 7 ways as a sum of consecutive naturals, for example, 5001138 + ... + 5001653.

It is an arithmetic number, because the mean of its divisors is an integer number (330092136).

Almost surely, 2^2580720078 is an apocalyptic number.

2580720078 is an abundant number, since it is smaller than the sum of its proper divisors (2700754098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2580720078 is a wasteful number, since it uses less digits than its factorization.

2580720078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10002839.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 2580720078 is about 50800.7881631772. The cubic root of 2580720078 is about 1371.6615565821.

The spelling of 2580720078 in words is "two billion, five hundred eighty million, seven hundred twenty thousand, seventy-eight".