5660521321 has 12 divisors (see below), whose sum is σ = 7005076032. Its totient is φ = 4478653296.

The previous prime is 5660521319. The next prime is 5660521357. The reversal of 5660521321 is 1231250665.

It is not a de Polignac number, because 5660521321 - 2¹ = 5660521319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5660521381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2391261 + ... + 2393626.

It is an arithmetic number, because the mean of its divisors is an integer number (583756336).

Almost surely, 2^5660521321 is an apocalyptic number.

It is an amenable number.

5660521321 is a deficient number, since it is larger than the sum of its proper divisors (1344554711).

5660521321 is a wasteful number, since it uses less digits than its factorization.

5660521321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784920 (or 4784907 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5660521321 is about 75236.4361263876. The cubic root of 5660521321 is about 1782.1823714962.

Adding to 5660521321 its reverse (1231250665), we get a palindrome (6891771986).

The spelling of 5660521321 in words is "five billion, six hundred sixty million, five hundred twenty-one thousand, three hundred twenty-one".