5581250733881 has 4 divisors (see below), whose sum is σ = 5600299371492. Its totient is φ = 5562202096272.

The previous prime is 5581250733871. The next prime is 5581250733923. The reversal of 5581250733881 is 1883370521855.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5342149293481 + 239101440400 = 2311309^2 + 488980^2 .

It is a cyclic number.

It is not a de Polignac number, because 5581250733881 - 2¹⁸ = 5581250471737 is a prime.

It is a super-2 number, since 2×5581250733881² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5581250733841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9524318366 + ... + 9524318951.

It is an arithmetic number, because the mean of its divisors is an integer number (1400074842873).

Almost surely, 2^{5581250733881} is an apocalyptic number.

It is an amenable number.

5581250733881 is a deficient number, since it is larger than the sum of its proper divisors (19048637611).

5581250733881 is a wasteful number, since it uses less digits than its factorization.

5581250733881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048637610.

The product of its (nonzero) digits is 8064000, while the sum is 56.

The spelling of 5581250733881 in words is "five trillion, five hundred eighty-one billion, two hundred fifty million, seven hundred thirty-three thousand, eight hundred eighty-one".