2561011532 has 6 divisors (see below), whose sum is σ = 4481770188. Its totient is φ = 1280505764.

The previous prime is 2561011513. The next prime is 2561011543. The reversal of 2561011532 is 2351101652.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 320126438 + ... + 320126445.

It is an arithmetic number, because the mean of its divisors is an integer number (746961698).

Almost surely, 2^2561011532 is an apocalyptic number.

It is an amenable number.

2561011532 is a deficient number, since it is larger than the sum of its proper divisors (1920758656).

2561011532 is a wasteful number, since it uses less digits than its factorization.

2561011532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640252887 (or 640252885 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2561011532 is about 50606.4376537215. The cubic root of 2561011532 is about 1368.1609102186.

The spelling of 2561011532 in words is "two billion, five hundred sixty-one million, eleven thousand, five hundred thirty-two".