5641531856 has 80 divisors (see below), whose sum is σ = 11364986880. Its totient is φ = 2711448960.

The previous prime is 5641531853. The next prime is 5641531873. The reversal of 5641531856 is 6581351465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5641531853) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12080135 + ... + 12080601.

It is an arithmetic number, because the mean of its divisors is an integer number (142062336).

Almost surely, 2^5641531856 is an apocalyptic number.

It is an amenable number.

5641531856 is an abundant number, since it is smaller than the sum of its proper divisors (5723455024).

5641531856 is a wasteful number, since it uses less digits than its factorization.

5641531856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 786 counting only the distinct ones).

The product of its digits is 432000, while the sum is 44.

The square root of 5641531856 is about 75110.1315136647. The cubic root of 5641531856 is about 1780.1872310732.

The spelling of 5641531856 in words is "five billion, six hundred forty-one million, five hundred thirty-one thousand, eight hundred fifty-six".