2576778564 has 24 divisors (see below), whose sum is σ = 6042702400. Its totient is φ = 854609184.

The previous prime is 2576778551. The next prime is 2576778577. The reversal of 2576778564 is 4658776752.

It is an interprime number because it is at equal distance from previous prime (2576778551) and next prime (2576778577).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537139 + ... + 541914.

Almost surely, 2^2576778564 is an apocalyptic number.

It is an amenable number.

2576778564 is an abundant number, since it is smaller than the sum of its proper divisors (3465923836).

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

2576778564 is a wasteful number, since it uses less digits than its factorization.

2576778564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079259 (or 1079257 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 57.

The square root of 2576778564 is about 50761.9795122294. The cubic root of 2576778564 is about 1370.9628913777.

The spelling of 2576778564 in words is "two billion, five hundred seventy-six million, seven hundred seventy-eight thousand, five hundred sixty-four".