6566693253136 has 45 divisors (see below), whose sum is σ = 13177416105373. Its totient is φ = 3169984274240.

The previous prime is 6566693253083. The next prime is 6566693253161. The reversal of 6566693253136 is 6313523966656.

The square root of 6566693253136 is 2562556.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3443414654736 + 3123278598400 = 1855644^2 + 1767280^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 297245451 + ... + 297267541.

Almost surely, 2^{6566693253136} is an apocalyptic number.

6566693253136 is the 2562556-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566693253136

6566693253136 is an abundant number, since it is smaller than the sum of its proper divisors (6610722852237).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6566693253136 is an frugal number, since it uses more digits than its factorization.

6566693253136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44248 (or 22122 counting only the distinct ones).

The product of its digits is 94478400, while the sum is 61.

The spelling of 6566693253136 in words is "six trillion, five hundred sixty-six billion, six hundred ninety-three million, two hundred fifty-three thousand, one hundred thirty-six".