5306721333524 has 24 divisors (see below), whose sum is σ = 10138130436840. Its totient is φ = 2415704546304.

The previous prime is 5306721333491. The next prime is 5306721333539. The reversal of 5306721333524 is 4253331276035.

It can be written as a sum of positive squares in 4 ways, for example, as 2267473924 + 5304453859600 = 47618^2 + 2303140^2 .

It is a super-2 number, since 2×5306721333524² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698984789 + ... + 698992380.

It is an arithmetic number, because the mean of its divisors is an integer number (422422101535).

Almost surely, 2^{5306721333524} is an apocalyptic number.

It is an amenable number.

5306721333524 is a deficient number, since it is larger than the sum of its proper divisors (4831409103316).

5306721333524 is a wasteful number, since it uses less digits than its factorization.

5306721333524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397977259 (or 1397977257 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 44.

The spelling of 5306721333524 in words is "five trillion, three hundred six billion, seven hundred twenty-one million, three hundred thirty-three thousand, five hundred twenty-four".