2581687352 has 16 divisors (see below), whose sum is σ = 4842277200. Its totient is φ = 1290413440.

The previous prime is 2581687307. The next prime is 2581687379. The reversal of 2581687352 is 2537861852.

It is a junction number, because it is equal to n+sod(n) for n = 2581687297 and 2581687306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27524 + ... + 76947.

It is an arithmetic number, because the mean of its divisors is an integer number (302642325).

Almost surely, 2^2581687352 is an apocalyptic number.

It is an amenable number.

2581687352 is a deficient number, since it is larger than the sum of its proper divisors (2260589848).

2581687352 is a wasteful number, since it uses less digits than its factorization.

2581687352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107566 (or 107562 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 2581687352 is about 50810.3075369555. The cubic root of 2581687352 is about 1371.8329049905.

The spelling of 2581687352 in words is "two billion, five hundred eighty-one million, six hundred eighty-seven thousand, three hundred fifty-two".