2560640516 has 24 divisors (see below), whose sum is σ = 5217912000. Its totient is φ = 1076710752.

The previous prime is 2560640477. The next prime is 2560640557. The reversal of 2560640516 is 6150460652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861266 + ... + 864233.

It is an arithmetic number, because the mean of its divisors is an integer number (217413000).

Almost surely, 2^2560640516 is an apocalyptic number.

It is an amenable number.

2560640516 is an abundant number, since it is smaller than the sum of its proper divisors (2657271484).

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

2560640516 is a wasteful number, since it uses less digits than its factorization.

2560640516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725563 (or 1725561 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2560640516 is about 50602.7718213143. The cubic root of 2560640516 is about 1368.0948381351.

The spelling of 2560640516 in words is "two billion, five hundred sixty million, six hundred forty thousand, five hundred sixteen".